An engineer born in the 1980s from 2073, 90-year-old Lin Ye (who once relied on the fifth-generation Neuralink brain-computer interface technology to eliminate Alzheimer's disease lesions) went to the "Apocalypse" biotechnology company at the agreed time, and accepted the "Kunling" AI biochip implantation experiment as volunteer 001. Due to intentional events, his consciousness flowed back to his 6-year-old body in 1990. The story mainly tells that the protagonist is in a historical event again! What is his every decision and every pursuit in life? For money, power, profit, or pursue your true heart! ? If you could live forever, what would you do? ? Maybe this book can slowly find something you are pursuing! This is also my original intention in writing this book!