Zhang Ling spread the liquid that stimulates plant growth on the mountain wall. Although it was somewhat wasteful, he did this to better conceal the location of the cave. With the mysterious liquid, after a few hours, this side of the mountain wall would be covered with shrubs and plants, concealing the cave below. Subsequently, Zhang Ling entered a crack in the mountain wall, and soon he appeared in a simple cave. This was a newly opened cave. The furnishings inside were very simple, with only a few stone rooms and several stone tables and chairs. Zhang Ling walked straight into one of the stone rooms and then disappeared from sight. It wasn't until dawn that Zhang Ling emerged from the original cave on the other side of the mountain wall. After leaving the cave, Zhang Ling first controlled the flying boat to the other side of the mountain wall. It had already changed greatly, with sparse vegetation growing on it, blending with the surrounding mountain wall, making it impossible to see that there was a cave below. Then he went to two nearby medicine fields, where he planted some needed spiritual herbs and grasses. After busying himself for most of the day, he returned to the cave and began to cultivate. Besides a simple medicine garden and two secret rooms, the new cave had no other complex structures.

Of course, Zhang Ling also placed the Six甲 Soul-Bewildering Array outside the cave, forming another layer of defense. With one real and one fake cave, even if ordinary cultivators broke through his array, they would only discover the original cave. The possibility of the real cave being exposed was not great. The real and fake caves were connected by only a few hundred feet of tunnel, in which he had also set up a thick boulder, making it very difficult to discover even with divine sense. However, if a cultivator came here and was stubborn, constantly using divine sense to investigate, it could still be discovered. There were quite a few of these kinds of guys in the cultivation world. After the caves left behind by some ancient cultivators were visited by later generations, they were often investigated thoroughly. But if he really encountered such a crisis, Zhang Ling would have already escaped. Zhang Ling did this only to add another layer of protection. ... Half a month later, Zhang Ling came to Wanxiang City again, heading straight for a certain place. Standing on a bluestone square, Zhang Ling looked at the dark building more than twenty feet high in front of him and felt a sense of oppression. A pitch-black tower, not considered tall among the buildings Zhang Ling had seen, but this black tower was surrounded by a special layer of spiritual light. Whether it was the special building material or the restrictions on it, a sweep with divine sense brought a sense of oppression, a feeling that couldn't help but inspire awe. There was a square below the tower, and there were also some cultivators, not many, but each cultivator had a solemn expression, and this alone could show the special nature of this tower. This tower was called the "Myriad Law Tower," located on an independent mountain peak in a windless area, with a total of seven floors, similar to a sect's library. The same was that it contained many rare cultivation methods and secret techniques, even more powerful than the heritage of ordinary sects. The Myriad Law Tower was originally established by the ancient cultivators who built Wanxiang City and has continued to this day. The difference was that the first floor was used for lecturing, with a lecture meeting every month. It was said that some Golden Core cultivators would also give lectures every few years. This was Wanxiang City's benefit for rogue cultivators. However, Zhang Ling was not here to listen to any cultivator's lectures. After taking out the Fire Cloud Island token, he entered the Myriad Law Tower without any hindrance. He came here to purchase "cultivation insights," something that would not appear in ordinary places. Even inheritance sects would only give this treatment to true disciples. The Fire Cloud Island token was his proof, which was a small right of cultivators who rented the island. Ordinary rogue cultivators had to do some specific tasks and obtain some contribution points to be eligible to enter the third floor of the Myriad Law Tower.

This privilege made Zhang Ling somewhat delighted. Although he only had one free opportunity to enter and exit the third floor of the Myriad Law Tower, the Golden Core insights he needed were exactly on the third floor. As soon as he entered the third floor of the Myriad Law Tower, it was dark and he couldn't see anything. Zhang Ling was stunned, thinking he had fallen into some kind of restriction. Then a powerful divine sense swept over him, and a muffled voice sounded in his ear. "Boy, what are you doing here? Foundation Establishment cultivators don't come to the third floor." "Reporting to Senior, this junior is Zhang Ling, here to purchase a Golden Core insight. This is the proof, please check it, Senior." A flash of spiritual light, and the token in Zhang Ling's hand turned into white light and disappeared. After two breaths, the black mist in front of him dissipated, and Zhang Ling could see the environment he was in. It was dark all around, and he could only see a white jade platform not far in front of him, on which sat an old man with white hair and beard. "This junior Zhang Ling greets Senior." Seeing the old man, Zhang Ling quickly bowed. "Hehe, you little one still know some etiquette." The muffled voice sounded again, and then the old man raised his hand, and the token reappeared in Zhang Ling's eyes. "May I ask Senior's honorable name?" "This old man is Fire Dragon Immortal." The old man swept over Zhang Ling, and a look of surprise appeared in his eyes. "Oh, you have already reached the False Core stage, and your spiritual power is more condensed than ordinary cultivators. It seems that you are about to form your Golden Core." "Senior Fire Dragon is too kind, this junior has no confidence in forming the Golden Core." The old man just chuckled, looking at Zhang Ling with a half-smile. Facing the old man's gaze, Zhang Ling appeared somewhat unnatural and quickly asked, "I wonder, Senior, about purchasing the insights..." Before he could finish speaking, the old man spoke again: "Since you have rented a medium-grade spiritual vein, you naturally have this qualification, but the books on this third floor must be purchased with spiritual stones, this must be made clear in advance." "This junior knows." Zhang Ling just nodded when he heard this. "Go." The old man casually pointed to a passage on the left and then closed his eyes to meditate again. "Thank you, Senior." Zhang Ling bowed to the old man again, took the token, and walked towards that passage. Although he had a token, his authority in the Myriad Law Tower was not great. He could only choose a cultivation method on the second floor for free, or have the qualification to enter the third floor once, but he did not have the right to choose a cultivation method for free. The books collected on the third floor were mostly not ordinary goods. Inside, there were not only the cultivation methods needed by Golden Core cultivators, but also some special secret techniques. Moreover, they covered a wide range, including not only Xuanmen cultivation methods, but also Demonic cultivation methods, and the cultivation methods of demon refiners. After walking through a short passage, the view suddenly opened up, entering a hall, and the first thing he saw were several tall books, circling around the center of the hall.