Thinking back to years ago, when he was in the early stage of training his hundred clones, it was Jiang Yuer, who had a close relationship with Yin Ruolan, who gave him advice and prevented him from going astray. Now, he has finally cultivated to his current level and arrived at the top of the Hongmeng Jianmu tree, only to discover that Li Yunjin had been here hundreds of billions of years ago and had stayed here for more than 20 billion years.

Just now, Li Mu had deduced every detail of Li Yunjin's life here by going back in time. Through deduction, Li Mu could see that Li Yunjin really wanted to enter the Lingxiao Universe back then, but his cultivation level was not high, he was only at the Hongmeng Immortal Ancestor Realm, so he could only stop in the treetop world.

The treetop world was born only 10 trillion years ago, and the strongest person is only at the Chaos Immortal Ancestor Realm. With Li Yunjin's strength at the Hongmeng Immortal Ancestor Realm, it is enough to sweep everything here.

As for the reason why Li Yunjin stayed here, Li Mu had guessed the general reason. Naturally, he hoped that Li Mu would be able to go to the treetop world to take a look one day.

However, due to the special properties of the treetop world, Li Mu could not perceive what was happening here. In addition, Li Mu was still experiencing the training of his clone at that time, so Li Yunjin's hopes were naturally dashed.

As for why Li Yunjin left suddenly, this was the focus of Li Mu's deduction and tracing. However, the truth was obscured by a thick fog. However, judging from Li Yunjin's expression at the time, apart from a hint of guilt, he left very peacefully.

From this, Li Mu can conclude that Li Yunjin's departure is most likely related to Yin Ruolan. After all, Yin Ruolan was able to guide him through Jiang Yuer when he had just been promoted to the ancestor of Hongmeng, and even allowed Jiang Yuer to enter and exit the Lingxiao universe freely. Her cultivation level can be seen from this.

If Yin Ruolan was willing, she would have met Li Mu long ago, and Li Yunjin would not be restricted by the prohibitions between the Lingxiao Universe and the Jianmu Treetop World and unable to enter the Lingxiao Universe.

Of course, Li Mu did not blame Yin Ruolan for this idea. After all, from the beginning to the end, everything Yin Ruolan did was for his own good, and she must have her own reasons for doing so.

It is precisely because of Li Yunjin that Li Mu cares so much about Hunyuan Taoist Sect.

Although Li Yunjin was ultimately unable to meet him, Hunyuan Taoist Sect was founded by Li Yunjin after all. Now that Li Mu had seen it, he would naturally not let it disappear just like that. Rebuilding Hunyuan Taoist Sect was just a piece of cake for him.