I have a book here that I recommend to you. It's called "The Complete Diablo Profession Master". The protagonist of this novel, Lan Wu, transmigrated into the Diablo world and found that he did not have the most important skill tree for professionals, but he had a system that allowed him to learn all the professional skills. He could change his equipment to become a master of all classes and overcome all kinds of difficulties. King Barr is the leader of Tongtian. He also appears in this novel ~ I hope you like this fairy's recommendation. Muah ~😗