Firefighters from the Yongle Dynasty

All living beings have a way, and there is no root in the world. If you ask what is the way, just go down. This is the story of how a firefighter who traveled to the Ming Dynasty changed the times in the conflict between his own ideals and decadent reality... Li Xingye, a top soldier of the fire brigade, came to the Yongle period of the Ming Dynasty. Should we be assimilated by the corrupt system, or should we move forward in line with our ideals? What did he leave behind in the long river of history when he returned to his old career...