Pei Xining was born in a space-time management bureau in the interstellar chaos. The managers looked at each other, but they still sent him to various planes to maintain the world line according to the will of the universe.
In fact, Pei Xining's predecessor was a system, and the people closest to him in each world were the few speed-travelers he had bound to. Later, when we return to the Time and Space Management Bureau, all the proud people awaken their memories and think that they are Zai's favorite father/brother/sister/uncle.
World 1. Modern world, on how to develop correct values
World 2. The ancient world, cultivating the imperial temperament and serving the people
World 3. The world of rivers and lakes, reach the top, be romantic and lively
World 4. Interstellar world, experience cyber mechas, kill enemies and save the world
World 5. The world of immortals and heroes, with high spirits and high spirits, defeating all monsters.
Purpose: Live a wonderful life