Three Tours of the World

A young man who was born in a trauma hospital and studied martial arts by observing the human body and injuries, in order to verify whether he should finish writing a "Xing Yong Lu" that "can both save people and kill people more effectively", he stepped into the world with the promise of returning home in three years; he went from longing to be recognized by his idol to gradually understanding that the real answer is not "can I become famous", but "who should own dangerous knowledge, who should be restrained, and who will be responsible for mistakes."