The worlds greatest martial artist reincarnated in another world v.1

This is a story back when there was a young man named xi Lou who was walking around when he saw a boy getting beat up by a gang and then xi Lou showed up when they were about to hit him again and he caught his fist before it hit the boy and then he broke the guys wrist and his other gang members started to get out a knife and then stabbed xi Lou and he kept on fighting while he told the kid to run away slowly loosing blood he kept fight but got stabbed again and then after a little while he manages to kill all of the guys using martial arts that his grandfather taught him and then he lies there struggling to move because he was stabbed and bleeding out from his wounds and then slowly he starts to fall asleep