I'm in the Wild: You Can Become Stronger by Bragging

When Chen Xu traveled to prehistoric times, he was very disappointed at first. According to his expectations, he should be able to obtain extremely powerful power immediately, and then he can destroy the world and become the master of this world. However, the reality is not so beautiful. On the contrary, Chen Xu is now very weak. He can't even breathe under the pressure of an ant. He looked around, trying to find something that could help him become more powerful, but he didn't find anything that could be called a treasure. So he decided to leave here and look for other opportunities. He slept for a few hours and saw a mountain ahead. He thought there might be something useful there, so he decided to go there and have a look. He walked for a while, and the mountain gradually became steeper and steeper. Chen Xu felt that his steps became more and more difficult, but he did not sleep. When he finally reached the top, he saw something that shocked him. There is an ancient tree on the top of the mountain, with some mysterious symbols carved on the trunk, like some ancient writings. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.