After some careful consideration and investigation, Hua Qingyu finally found the root cause of the strange state of Shenyu Valley - the water quality was polluted. The fact that the Tianxing River is constantly flowing proves that there must be a continuous source of pollution upstream.

As for whether this poison can be solved, Hua Qingyu is still quite confident in the medicinal skills of this vein and the abilities of his predecessors. It's just that the people in the valley have been poisoned for a long time, and Hua Qingyu can almost conclude that they can no longer recover as "people".

The only surviving normal person in the Peony Collection, the swordsman surnamed Wu, quietly followed behind after Hua Qingyu and Fei Tukong left for Cangyun Ridge. Of course, he didn't have the slightest malice, he was just worried about the safety of the two of them, and wanted to secretly escort the two out of the valley. In this way, he watched all of Hua Qingyu's every move. When he learned that someone was secretly doing all this, he was full of anger and couldn't help himself, and insisted on going to Cangyunling with Hua and Fei to find the wicked man.

The Tianxing River flows out of the southern part of the Cangyun Mountains, passes through the Shenyu Valley, and flows through a plain. Because the Cangyunling area is not the source of the river, even if you know that the source of the pollution is upstream, it is not easy to find it. Without saying a word, the swordsman walked in front, leading the snow-covered path for the two behind him.

"Brother Wu, I wonder if there are any other families along the Tianxing River, especially after leaving the Divine Jade Valley, do you pass through the towns and villages?" Hua Qingyu asked worriedly.

"Yes. The upper reaches of the Tianxing River are from Qingling Mountain to Cangyunling, the section from Shenyu Valley to Baitong Cliff is counted as the middle reach, and after leaving the mountainous area, it flows into Dajing Lake, which is the lower reach. The upper reaches are all in the mountains, and there should be no people. The most prosperous in the middle reaches is the Shenyu Valley. However, the terrain of the downstream basin is flat, and there are many towns along the river, and there are many Dazhou cities near Dajing Lake. The swordsman replied in detail.

Hua Qingyu was sad, this is troublesome.

The swordsman sighed: "In the past, it was only a plague, and it happened in the Shenyu Valley surrounded by mountains, and it was difficult to spread outside the valley, which can be regarded as a blessing in misfortune. Who knows, but there is something wrong with the river, so if you think about it, I am afraid that the downstream will ...... It's already been turned upside down. ”

"After returning to the school, the first thing to do is to seek out the countermeasures with the seniors, and quickly develop the medicine of resistance. Hua Qingyu made up her mind.

"This area belongs to the Chixi Domain, and there is such a big mess, doesn't the Chixi Emperor ignore it at all?"

Chixi Emperor Ji Yuqiu, at this time, it is estimated that he is still in the stage of healing and recovery. Hua Qingyu sneered: "I'm afraid his mind is all spent on women." Besides, if you don't have the level of medicinal skills of your predecessors, how can you solve this trouble?"

"That's true, but the Red Dart Emperor can at least catch the culprit and eliminate the source of poison! Why is it our turn to risk our children of the rivers and lakes?"

Fei Tu reminded Hua Qingyu with empty words, and she hurriedly told the two: "In case you meet that poisoned person, you two must not sacrifice your life to fight, presumably he is not a simple person." ”

"Whoever it is, they all have to die!" said the angry swordsman to her advice.

"If there is a huge difference in strength, there is no point in sending you to death in vain. Brother Wu, I don't know what realm you are?" Hua Qingyu asked.

"It's not high, it's just four elephants. If it was the Five Elements level, I would have flown to find that villain a long time ago!" the swordsman shook his fist and gritted his teeth.

Hua Qingyu saw that persuasion was useless, so she had to sigh lightly.

Along the riverbank, the three of them went around from the southern end of the Shenyu Valley into Cangyun Ridge. The deeper you go, the deeper the snow gets. Every other hour, Hua Qingyu tested the river water with a special poison detection powder to make sure that the source of the poison was not missed. After walking day and night for two days, the three of them came to a waterfall.

There is a pool under the waterfall, and the pond is connected to the Tianxing River. "Take a break. The swordsman, who had been silent for two days, finally spoke.

Hua Qingyu sprinkled the poison detection powder again, and the pool water was still red.

Fei Tukong sat on a rock, watching the pool in a daze. "Qingyu, you said that poison will eventually enter the bloodstream, so the medicine should be the same, right? A bowl of water turns red after being sprinkled with poison detection powder, how do you know if there is poison or medicine in it?" he suddenly turned his head and asked.

"The ultimate goal of poison is to damage the body, and the goal of medicine is to dispel disease and poison and nourish the body. This fundamental distinction makes poisons and drugs work in completely different ways after they enter the bloodstream. I won't say too deep, to describe it simply, the material in my medicine powder is like human blood, if there is no poison in the water but there is a mild medicine, then it will definitely not make the drug detection powder turn that dark red. Hua Qingyu explained.

After listening to Hua Qingyu's words, the swordsman became more and more restless, pacing around the edge of the pool, holding his arms and thinking deeply, and from time to time he looked up at the top of the waterfall. "No, it's not normal! I remember that at this time of year, such a small waterfall would have been frozen, and the pool would be covered with thick ice. The swordsman muttered.

"Maybe someone deliberately didn't want the river to freeze. "Hua Qingyu said.

The swordsman hurriedly paced back and forth for two more times: "No, I can't wait, let's continue on the road." Above the waterfall is a fork of the river, there is a main stream, two tributaries, and the three of us are exactly divided into three roads......"

Before he finished speaking, Fei Tukong hurriedly vetoed: "That's not good, we are both four-elephant level, it's okay to say, Sister Qingyu is only at the two-level level, let her go alone, I don't worry." ”

The swordsman was helpless: "Then I have to go all the way with the two of you, and I will go all the way by myself." The chance of finding the wicked is 2 out of 3, which is okay, but it's just ...... I really want to kill him myself! or let's go together, though

It may take a little more work, but it's worth it to be able to kill the enemy yourself! Besides, I don't want anything to happen to you both. ”

"Brother Wu, don't forget, finding the wicked is not our primary goal, but cleaning up the source of pollution is the most important thing. "It's better to take two separate paths." ”

Hua Qingyu blinked and listened to the discussion between them for a long time, and then said leisurely: "Is it so complicated to use? Let it have thousands of tributaries, don't you know which one the poison comes from when you try it with the drug detection powder?" Just continue to walk upstream. ”

The swordsman and the Fei Tu looked at each other with empty faces, and their expressions were slightly embarrassed. Why didn't you think of such a simple thing?

But who knows, the truth made a big joke with Hua Qingyu.

Hua Qingyu first tried the tributary on the right, and after the poison detection powder was sprinkled, the river water was still clear and translucent, and it did not turn red until it merged. "Not this one. She was sure.

The second time, she sprinkled the poison powder in the main stream of water. The exact same thing happened, and the river began to change color when it reached the confluence.

The swordsman took a deep breath and faced the direction of the tributary on the left: "It looks like it's this way!"

Fertus shook his hands and took a step towards the woods to the left.

"Wait!" Hua Qingyu stopped the two, and for some reason, she felt a little uneasy in her heart. To be on the safe side, she sprinkled some powder into the tributary.

The river still hasn't changed color.

"Huh?" Fei Tukong was very surprised, "The three triages are not poisonous?"

The swordsman even had doubts about Hua Qingyu's ability: "Girl, is this medicine powder reliable?"

In the middle of winter, the bridge of Hua Qingyu's nose was dripping with sweat: "It should be reliable, I have tested it hundreds of times after making it, and there is no mistake every time, why can't I find it out when I get here?"

"No, it's not that you can't find it, otherwise the river at the confluence wouldn't turn red. Fei Tukong's face became solemn, "The three diverts are not poisonous, but after the merger, they are poisonous, so there is only one possibility - the source of the poison is in the place of the confluence!"

"Well, that's true!" the swordsman immediately rushed to the water's edge, looking around. Fei Tukong looked upwards, and there were branches stretching over the river, and he suspected that the source of poison might be hanging on the branches. The two searched for a long time, but found nothing.

Fei Tukong firmly believed that his inference was not wrong: "Since the source of the poison cannot be found on the surface of the water or in the air, it can only be underwater!"

The water is very clear, and there is basically an unobstructed view of what is at the bottom of the water, nothing more than cobblestones and fine sand. If the source of the poison is really underwater, it should be hidden under the sand and gravel.

The swordsman asked: "If the source of poison is at the bottom of the water, then after the girl sprinkles the poison detection powder, the first thing to turn red should be the water near the bottom, why does it start to turn red from the surface of the water?"

"This ......" Fei Tukong couldn't answer, so he had to spread his hands, "Then Brother Wu, tell me, what is going on?"

"I guess the source of the poison should be in the mud by the river, gradually dissolving in the river. The swordsman made another speculation.

"It's impossible, according to what you just said, the river should start to turn red from the shore, but the first thing to turn red just now is clearly in the middle of the river!"

"Okay, don't fight!" Hua Qingyu, who was squatting by the river and pondering, stood up, "I have a rough idea in my heart." ”

Both Fei Tukong and the Swordsman looked at her.

"The person who poisoned him should be a top expert who is immersed in the poisonous path, and I still underestimate him. Hua Qingyu sighed, "There is no poison in the three streams, but after the confluence, it turns into poison, and this kind of kung fu to change non-toxic to poisonous is the same as some of the methods of the main line." ”

Fei Tukong immediately understood what was going on, and couldn't help but sigh: "Absolutely!"

Only the swordsman was still in the clouds, puzzled: "Girl, you mean that the person who poisoned may be someone from your master's sect?"

"How is it possible!Sister Qingyu's teacher is...... The people of the sect are all kind-hearted people. Fei Tukong did not reveal anything about Hua Jun's lineage.

The swordsman blinked, but said nothing.

"Brother Wu rest assured, there is no evil person in the division commander of this sect, and he will never do such a thing that hurts nature and reason. Moreover, they live far away from here. I'm just amazed that there are people other than people from this sect who can use poison to such a level. To be honest, the three of us alone probably won't be able to unwind this catastrophe. Hua Qingyu said calmly.

There was a look of disappointment in the swordsman's eyes: "Are you going to give up?"

"Of course not. The investigation still has to continue, and the more information we can obtain, the more detailed the better, so that the seniors of this sect can develop antidote in the future. Hua Qingyu said, "Since the three diverts may contain raw materials that turn into strange poisons, then let's go up against the current one by one to find their source!"

The swordsman happily complied.

The three of them walked along the mainstream first. Compared with the other two tributaries, the terrain on the banks of the main river is relatively flat, and the swordsman and Fei Tukong broke through the snow in front to open the way, and Hua Qingyu followed behind, running to the side from time to time to observe the grass emerging from the snow. "Good materials come out of harsh realms", Hua Qianxue had said this to Hua Qingyu many times.

As the three of them gradually went deeper into the mountains, the river became shallower and shallower, the river surface became narrower and narrower, and the river became thinner. One morning, when Hua Qingyu climbed a high rock and looked into the distance, something strange caught her attention. Her eyes widened to see what it was, but the sunlight reflected by the snow was too bright.

After calling Fei Fukong, he only glanced at it and came to the conclusion: "Hey, that's a roof!"

In the deep mountains and old forests, how could a roof appear inexplicably? Could it be that a certain high-ranking person lived here in seclusion? Thinking of this poisoning incident, the three of them became nervous.

After walking along the riverbank for a long time, the house finally came into view of the three of them. It was a single-storey cottage with a wall and yard. The roof tiles were broken, the courtyard walls were broken, and even one place had collapsed. The gate of the courtyard was facing the east, and the three of them went around to see that the plaque of "Tianxing Temple" had been broken into several pieces on the ground.

"It turned out to be a small temple dedicated to the river god. Fei Tukong breathed a sigh of relief.

"I've lived in the Valley of the Divine Jade for so long, and I didn't know there was a temple here. The swordsman said, "This place is extremely far away from the Divine Jade Valley, what is the point of building such a temple?"

"It looks like no one has come for a long time, and the house is about to collapse. "Wasteland.

Hua Qingyu said faintly: "If no one has come for a long time, why don't you see snow?"

The other two suddenly realized, and the swordsman showed his weapon with a "brush", and stepped on the broken plaque and walked into the courtyard.

The yard is not large, only a little snow near the base of the wall. There was a rusty incense burner in the middle of the courtyard, and a few unburned candles stuck to the shelves on the stove. There was a bell in the northwest corner of the courtyard, and the striking wood was rotten, and a hanging rope was broken. "Xianyun Hall", the wall above the main door of the main house, is engraved with these words.

Pushing open the old door, a musty smell hits your face. The room was dimly lit, with no tables or chairs, only a stone platform. On the stage was a dilapidated puff pad.

"It is said to be a temple, but there is no statue of the god, but it is like a place for meditation and practice. "Wasteland.

"No, there is a painting. The swordsman closed a door, leaving only half of the portrait dangling gently.

"This 'Celestial Star Temple' is really not a real temple. Hua Qingyu said, "The person who built the temple should be a hermit, after building a small temple here, he lived in seclusion alone, practiced swords in the courtyard during the day, and meditated in the room at night. In this way, the painting on the door is not a river god, but a person who is very important to the hermit. ”

Both the swordsman and Fei Tukong felt that Hua Qingyu was very reasonable.

"But looking at this dilapidated appearance, this hermit should have been dead for a long time. Hua Qingyu continued.

The swordsman nodded in agreement: "Yes, if you leave, you won't take the painting on the door with you." ”

Fei Tukong went down and said: "But now that I don't see this person's bones, I must have failed to cross the catastrophe and died." And this 'temple', which was not a temple, was occupied by another person, who came to sweep the snow even though he did not live there. ”

In other words, this later person must have had some kind of purpose. What could it be?" Hua Qingyu glanced at the other two.

"Find!" the swordsman picked up his knife and walked out of Xianyun Hall.

The yard is not large, and the snow has been cleared, so it is not difficult to search. There was nothing in the front yard, and the three of them went around to the backyard again. It is said to be a "backyard", but in fact it is just a small piece of open space between Xianyuntang and the back wall. There is no masonry here, but an uneven dirt floor.

The three of them looked at each other, could it be that the inference was wrong?

"Search it thoroughly!" the knife man was not reconciled, and went back to the front yard. "I'll go inside and see if there's any hidden mechanism. Fei Tukong also left. Only Hua Qingyu was left alone. She looked at the bulging ground in thought, and thinking about it, she walked to the wall and jumped out.

Outside the wall is the river, and Hua Qingyu stepped into the water. She looked around and noticed something strange near the wall. It was about half a man's height, swollen, like a stone but the wrong color. When I got closer, it turned out that the dark blue was just a piece of cloth under the snow. Inadvertently, Hua Qingyu caught a glimpse of a small hole in the cloth, and what was revealed in the hole was not the gray-white color of the stone. She tore off the cloth, and underneath it was a huge basket of bamboo strips. Underneath the basket, there was a faint movement of objects. Hua Qingyu's heart beat wildly, and she kicked the basket open, this time, she was so shocked that she couldn't possess her body, screamed, and fell into the river.

Fei Tukong and the knife man in the front yard hurried over when they heard the sound, and they were all dumbfounded when they saw the situation outside the courtyard. The thing under the basket was a round and thick python!

To be exact, the head of a python. This python was so big that its neck could not be seen from the river to the base of the wall, that is, its head was stuck under the courtyard wall of the Heavenly Star Temple!

Even though it was the middle of winter, the python was not dormant. When it saw the light again, it shook its head, as if trying to get up, but it couldn't move at all. The python opened its mouth wide, and a "sizzling" sound came from its mouth. The black-purple snake letter is spit out and receiving, which is very terrifying.

The frightened Hua Qingyu stood up and drew out the fairy sword.

"Don't be afraid, it won't come out. Fei Tukong comforted her, "It seems to be trapped here." ”

"Shhh

The python shook its head again, as if trying to break free from the steel nails, but finally gave up because of the pain, and saliva gushed out a lot.

At this time, the three of them found that there was a small ditch under Shekou, and the saliva of the giant python flowed along the small ditch in the direction of the river, and finally dripped into the river through a bamboo pipe hidden under the stone.

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