Traveling Through the Old World of Martial Arts, Where to Go?

My name is Duan Yu, I am a modern young man, but somehow I traveled to this world of martial arts. This world has choices between the old and the new. I still have to explore its mysteries and find a way back to modern times. My modern knowledge and fighting skills are what I rely on. I want to become a martial arts legend here and write my own legendary story. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.