From Student to Master

Official version: Dong Dou comes from a world where martial arts is prevalent, and comes to this technologically prosperous city to see how he transforms from a student into a master. Second version: Why do others travel to other worlds? What makes Dong Dou helpless is that he has traveled to this technological era. How does this allow him to practice? Okay, let's talk about making money to survive. I am Dong Dou, and I am also Chen Ke. I am a master, but now I am a student...