Lin Yu, a very ordinary senior high school student. After being betrayed by his girlfriend again, Lin Yu accidentally got a system called the invincible strong. Since then, his life has undergone great changes, and he gradually came into contact with this world In my opinion, some secrets that he has never been exposed to. After getting this system, black belts in taekwondo and champions in karate, in my eyes, are all scum with a combat effectiveness of five.