Travel Through Time and Become Emperor Taiyi of the East

I am from the Blue Star. My name is Li Nian. I rescued a little girl who traveled to the prehistoric world and became the Eastern Emperor Taiyi of the Sun Star. The protagonist obtained the sign-in system. In order not to be used as cannon fodder by the lich in the future, the protagonist Li Nian began a long retreat. The protagonist Gou will be invincible in the prehistoric world for a million years and change the general trend of heaven. With the lich and the tribulation, I don't know that I am the Eastern Emperor Taiyi. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.