To the south of Wuchen is a series of mountains, uninhabited.

Mortals don't know that in the middle of that mountain, there are several huge mountain ranges that are extremely desolate, there is no grass on the mountains, there are no birds and beasts, the stones and soil are all strange black, and the cracks in the ground are constantly wafting black smoke outward, eroding the nearby mountains and forests.

When I came here, I felt a chill, not only on my body, but also in my heart.

Qin Sang came to the sky, fell down the flying shuttle, and saw this endless 'black mountain head', and secretly said that it is too unworthy of the name to call the earth sinking cave here, and the scope is larger than the yin abyss!

In particular, the entrance of the sinking cave is like a sinkhole smashed out by a meteorite, with a diameter of hundreds of zhang, the black and swarthy entrance of the cave faces the sky, and a stream of black yin and evil qi hits the prohibition of the cave entrance, and is blocked inside, like a swimming fish, and the bottom of the cave is pitch black, as if leading to the entrance of the Nine Shadows.

Fortunately, the cave is deep in the mountains and forests, and if it is closer to the small country next to it, I don't know how much disaster it will bring.

Qin Sang jumped into the cave, he suddenly shuddered, his complexion changed slightly, he had Wen Yang Zhu and the Evil Avoidance Bag, two magic weapons that were specifically aimed at the Yin and evil qi, and when he was in the Yin and Yin Abyss, he could easily resist the erosion of the Yin and evil Qi, and he would even feel the biting cold in the underground cave.

From the entrance of the cave downward, the sinking cave became more and more open, and some distance inside, the entire underground became a huge abyss, not inferior to the Yin Abyss, and there were countless cracks on both sides of the abyss, like branches, stretching farther away, so that the creatures within a radius of hundreds of miles were affected by the Yin and evil Qi.

Qin Sang found his cave on the stone wall, went in to open the ban, and only then did he regain a little warmth on his body.

The cave house is as simple and crude as ever, Qin Sang picked up the jade slip in the cave mansion, pasted it on the center of his eyebrows, and found that the jade slip had the whole picture of the sinking cave, focusing on the prohibitions set by Shaohua Mountain in several places.

With such a large area, it is too expensive to completely block it with a ban, Shaohua Mountain just used a simple phantom array to cover the underground sinking caves, and then blocked those larger holes and cracks, so as not to let the yin qi spread too quickly.

Due to the variability of the terrain, new large cracks may appear, and sometimes those forbidden grounds can be damaged if they are washed in.

Therefore, Qin Sang's task is to inspect the entire underground sinking cave every two days, record all kinds of changes, and report them to the master, so as to prevent sudden changes that will lead to surprise.

Qin Sang thought about it and decided to go on patrol first.

He listened to the lecture in Shaohua Mountain for a month, and benefited a lot, especially when he heard a senior uncle tell about his experience of breaking the threshold several times during the Qi refining period, and suddenly on a whim, the bottleneck of the ninth layer was loosened, so he hurried over.

This inspection actually took most of the day, and after coming back, Qin Sang felt like he was walking around the glacier naked, and it took a long time to meditate and run the exercises before he could get rid of the cold qi in his body.

Record the changes in the sinking cave on the transmission note given by the master, and hit it out, Qin Sang blocked the cave, arranged the Confusion Mirror at the entrance of the cave, and began to retreat.

......

A month later.

Dingyun Mountain.

Qin Sang, Sun De and some loose cultivators gathered on the top of the mountain, drinking and having fun, Sun De planted many spiritual fruits in the medicine garden, each of which was sweet and delicious, but Sun De still sighed again and again that it was far worse than the red jade peach in Shaohua Mountain.

The other casual cultivators all looked deeply approving.

Qin Sang broke through the ninth layer, he was in a good mood, and he also echoed, and when the red jade peach was ripe, he would definitely go back to the mountain gate to taste it.

Sun De raised his wine glass and saluted Qin Sang, "Congratulations to Senior Brother Qin for breaking through the ninth layer, Senior Brother gave away thin wine, which is far less mellow than the immortal wine brewed by the spirit fruit in the mountain gate, I hope Senior Brother will not dislike it." ”

Qin Sang didn't even dare to say that he clinked glasses with Sun De and other loose cultivators one by one.

There is a long distance between Dingyun Mountain and the Sinking Cave, as well as the Great River Moat, but it is not a problem for immortal cultivators, since Qin Sang came to the Sinking Cave, Sun De invited him several times, but Qin Sang refused on the grounds of breaking through the retreat.

This time, Sun De came to the door in person, and it happened that Qin Sang had successfully broken through, so he did not refuse.

When I came to Dingyun Mountain, I learned that Sun De was worthy of the name of timely rain, not only had an excellent reputation in Shaohua Mountain, but even the nearby scattered cultivators also highly respected him.

Every once in a while, he would invite nearby scattered cultivators to gather in Dingyun Mountain, without the slightest shelf of cultivating immortal sect disciples, even in the face of scattered cultivators with extremely low cultivation, he greeted him with a smile, making people feel like a spring breeze.

When it comes to spiritual matters at meetings, whenever someone asks for advice, he will give him advice with all his heart, and he will not lose his self-cherishment.

Qin Sang tasted the wine and listened, feeling that the trip was worthwhile, and secretly admired this Senior Brother Sun, and it didn't hurt to come over often in the future.

Bidding farewell to Sun De and returning to the sinking cave, Qin Sang made a routine inspection, and when he passed by a crack, he suddenly felt something strange in the crack, and his heart was awe-inspiring, and he immediately retreated from the wind, took out the Bibo Sword from the mustard seed bag, urged Tianxing to protect his body with tears, and shouted coldly: "What person! Get out!"

After a while, a black shadow flashed out of the crack, and he couldn't help but say: "Qin Daoyou, don't be impulsive, it's me and it's me......"

Waiting for the person to appear, Qin Sang was surprised: "Hong Daoyou?"

This Hong Daoyou was a loose cultivator he had seen at the gathering in Dingyun Mountain, named Hong Shan, and the two had just separated from Dingyun Mountain.

Nodding his head at all, Qin Sang did not relax his vigilance and asked, "Hong Daoyou does not return to the cave after the party, what is the intention of trespassing into the cave without permission?"

Hong Shan sneered and said, "Qin Daoyou doesn't know, the talisman I refined myself needs to be tempered with yin and evil qi, so I often have to go to the depths of the underground cave. Wang Daoyou, who guarded the cave before, and Sun Daoyou, who was on Dingyun Mountain, all knew about it. When I was in Dingyun Mountain, I wanted to show Qin Daoyou, but I didn't expect to be very drunk and forgot about it. If Qin Daoyou doesn't believe it, you can ask Sun Daoyou, and he can help me testify. ”

Although Shaohua Mountain sealed the sinking cave, it did not prohibit others from coming in to collect the yin qi, and those large and small cracks could enter and exit at will.

Many casual cultivators can't afford to buy magic weapons, and they try their best to refine them, which can be described as strange, and the yin and evil qi is extremely cold, and refining them into the magic weapons adds a bit of power.

Qin Sang had several top-grade magic weapons on his body, and he didn't need to refine them by himself.

In order to be on the safe side, Qin Sang Fei asked Sun De for verification, and after a while, he received a transmission note from Sun De, confirming that this was the case, Qin Sang no longer stopped him, nodded, and warned: "Hong Daoyou, remember not to touch the forbidden places everywhere, in case the evil qi erupts and hurts people's lives, neither of us can eat and walk around." ”

"Understand," Hong Shan patted his chest, "Qin Daoyou, don't worry, I just need to find a crack, collect some yin qi and leave, and I will never dare to break into the core area." ”

Unexpectedly, when they gathered again, Qin Sang did not see Hong Shan.