A Journey Starting from the Forbidden City

A journey started by a boy from the 21st century, taking over a difficult mission from a big man, a strange time-travel journey, a magical story, a man who constantly seeks death, Baiye's life has just begun, and his journey can go very far. There must be companions on the road. I can't wait and I'm so busy that I can't even move in a panic. The answer is not very clear. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.