A program called "Identity Swap" has swept the entire Internet. The content is very simple, the identity of a father and his child is exchanged. The child can experience the difficulty of his father's work, while the father can experience the pressure of study. As soon as the program came out, it became very popular. The whole country. But this time, the protagonist fell on Yu Tian, ​​who was reborn and traveled back through time. Just when everyone thought this was another story about the prodigal son turning back... Yu Tian's operation confused the entire network... He founded the company in three days and made over RMB 100 million in five days... In less than a month, the company went public with a market value of RMB 100 billion! Not only that, he also developed anti-cancer drugs and upgraded nano-armour, making science fiction a reality! Times changed because of him