I Practice Martial Arts on Earth

After the protagonist obtains the system! Travel to other worlds and create martial arts on Earth! What is martial arts, you ask? Then let the protagonist answer you with a fist as big as a casserole! It's the first time a newcomer is writing a novel! I hope you all spray lightly. This is what I create out of boredom after get off work! I also want to see if I have any talent in this area! If not. Then come and hit me! ! Slightly slightly slightly slightly This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.