Lu Sanchuan stared at the hillock, unable to take his eyes off it.

The highest part of this hill is only two feet above the ground, but it occupies a large area. The mounds were covered with weeds, and there were scattered wildflowers, red and yellow, but there was not a single big tree in sight.

Su Qing saw him staring intently, followed a few glances, and didn't notice anything strange, "Brother Chuan, what's wrong?"

Lu Sanchuan raised his hand and pointed at the hillock, "Qing'er, was this hillock originally here?"

This Su Qing didn't know, he had an impression, but he didn't seem to have it, he thought about it for a long time, and just shook his head, "I don't remember very well, this hill should have been here all along, otherwise, would someone move a hill out of thin air?"

Lu Sanchuan also felt that there was some truth, but the more he looked at the hillock, the more abrupt he felt.

What's wrong, because there's no tree on the mound?

He quickly dismissed the idea. The Taoxian Valley has been excavated everywhere, and this hill must not be spared, maybe there were trees on the hill, but they were cut down.

But what's wrong.

Lu Sanchuan approached the hill, reached out and grabbed a handful of dirt, and put it under his eyes to take a closer look. In the earthy yellow soil, the thin roots and tendrils of wild grasses are faintly exposed.

He suddenly shouted, "Qing'er, do you have a shovel?"

Su Qing was startled, looked at him and shook his head.

Lu Sanchuan didn't care about 3721, jumped up the hill, used the hilt of the painted sword, and began to dig the soil on the ground.

When Su Qing saw him so abnormal, he immediately understood what he had discovered, and hurriedly jumped forward, fell beside him, and helped him dig the soil together.

The two hilts of the sword continued continuously, digging two feet underneath, and when I heard the sound of "dang", it seemed that I had touched something hard.

Lu Sanchuan was overjoyed, hurriedly put the painting sword aside, and picked up the ground with his bare hands, only to see that under the yellow soil, a piece of gray the size of a fingernail was exposed.

Su Qing looked at the gray and felt incredible, "Brother Chuan, what is this?"

Lu Sanchuan smiled mysteriously, held the painting sword and jumped down the hill, and then plunged the scabbard horizontally into the mound and dug the soil again. The movement is getting faster and faster, and it seems that buried in the soil is a treasure and secret that has been handed down from ancient times.

Su Qing looked down at the place where the man in black had been lying, then turned his head to look in the direction of the pharmacy, suddenly realized, and also jumped down the hill and dug the soil with Lu Sanchuan.

This time, it took a lot of time.

Lu Sanchuan went out with a sword, and it was difficult to enter at first, but in a moment, the whole sword easily sank. He immediately understood that the truth was ahead, so he accelerated his hoe with his sword and found a hole.

Overjoyed, he poked and plucked the dirt around the cave entrance even harder, and gradually, the original face of the cave was revealed.

It was a semi-elliptical opening, about seven feet high and three feet wide.

The entrance of the cave was sealed for some time, and when Lu Sanchuan poked his head in, he could feel that it was unusually stuffy, and there was a smell of corruption that had been stuffy for a long time, even if he was wearing a mask, he also had a strong sense of impact.

Su Qing looked at the black hole for a long time, and something vaguely appeared in his mind, but it was obscured by the hazy mist, and he couldn't really see it.

"Brother Chuan, where does this hole lead?"

Lu Sanchuan raised his hand and fanned lightly in front of his nose to dispel the smell of corruption, "If I'm not mistaken, I should go to the pharmacy." ”

"Pharmacy?"

"Hmm. Lu Sanchuan nodded, his face solemn. There was a sense of uneasiness in his heart, which intensified. "It's possible that the one who died by the stream was not the murderer of Doctor Taoxian. He's just a substitute for the dead, and the murderer hides him in this secret cave early in the morning, and then deliberately leads you here so that you can see that the murderer is dead. ”

"This..."Su Qing couldn't help but gasp, "What is the purpose of the murderer?"

Lu Sanchuan shook his head and raised his gaze to look at the top of the hill. It turned out that there was a dark passage under this small hill, and it was no wonder that no trees could grow on the hill, because the soil layer spread on the dark passage was too shallow.

"I don't know what the murderer's purpose was. Qing'er, let's go find some rags and make torches first. When the matter is completed, the filth in the cave should also be scattered, and it should be just in the right place. ”

The two of them went back and forth between the pharmacy, study, bedroom and other houses.

In all the houses, the tables, chairs, beds, and other tables have been emptied, but the curtains and clothes have also been plundered, except for the kitchen and the firewood room, and the cheapest coarse linen lies on the floor.

Lu Sanchuan found a wooden stick the thickness of his arm, wrapped all the coarse linen around one end of the stick, and wrapped it around a full forty-two times. The end of the coarse linen cloth was the size of a fist.

"It's done, Qing'er, let's go back to the stream. ”

When the two returned to the stream, Lu Sanchuan took out the folds of fire, lit the coarse linen, and waited for the fire to grow before entering the cave.

After all, the inside of the cave is not as good as the outside, and when the torch enters the cave, the flames instantly turn smaller.

The two walked side by side, looking around from time to time.

This dark passage is made of large stones, each large stone except for the inside and outside, the remaining four sides, there are concave and convex lines. Between the boulders and the boulders, the concave and convex coincide, and such a long dark passage was built.

The underpass is covered with a layer of soil, and on rainy days, rainwater seeps into the soil. If it rains lightly, it's better, the rain can't seep deep, and it will evaporate on a sunny day. If it rains heavily, it will rain heavily in the tunnels. And only in and out.

Lu Sanchuan walked in the dark passage, and from time to time he would step on a shallow puddle. On the stone walls on the left and right, there are also occasional droplets of water dripping, and there is a "ding dong" sound, which adds even more horror to the already gloomy dark passage.

Fortunately, there was no news.

The further you go in, the thinner the air becomes, and the stronger the rancid smell becomes.

Lu Sanchuan had some difficulty breathing. He wanted to go back, but he was unwilling to give up the breakthrough he had so hard to find.

The two of them left for a while, and Lu Sanchuan's wheezing was heavier, still unwilling to give up. "Qing'er, are you okay?"

Su Qing was also panting, and the beads of sweat on his forehead were the size of soybeans. But she didn't want to be a burden to Lu Sanchuan, gritted her teeth, shook her head and said, "I'm okay!"

The flames on the torch were already very weak, and Lu Sanchuan's attention was all under his feet and in front of him, and he didn't pay attention to Su Qing's situation, so she was completely fine, nodded her head, and said in a deep voice, "Go!"

The two staggered forward, two pairs of cloth shoes clumping heavily on the ground, and when they stepped on the puddle, they splashed up the water, which just skimmed the trouser legs and hit their ankles. The two of them were each excited, and their spirits improved in a short time, but after a while, their heads returned to swelling.

Su Qing finally couldn't hold on, his body went limp, and he slid down against the stone wall.

Although Lu Sanchuan was dizzy and unresponsive, he also noticed it, hurriedly grabbed Su Qing, and hurriedly said, "Qing'er, how is it!"

He almost lost his breath because he spoke so quickly.

Su Qing was already on the verge of collapse, his eyelids seemed to droop, and although he didn't completely close his eyes, he was gradually losing consciousness.

Lu Sanchuan was so anxious that he wanted to pick up Su Qing and retreat in a hurry. But with one hand drawing a sword and the other with a torch... He threw the torch forward, and it seemed to hit something, bounced back, and landed at his feet.

Lu Sanchuan was overjoyed, and finally came to an end.

He hurriedly grasped the sword with both hands, and stabbed it forward with all his might, four or five times, until finally a small hole was pierced, and fresh air flowed through the small hole.

Lu Sanchuan felt a breeze caressing his cheeks, which lifted him. He had the strength to stab the earth that had buried the hole with his sword even harder.

Eventually, the hole grew bigger and brighter, and the air was getting fresher.