Yu Canghai was originally a disabled person with two legs, and his calf was cut off a long time ago. In order to facilitate his walking and fighting, he raised a dwarf to support his body, which is why Yu Canghai is two people. In the novel, he is described as being split into two people by a knife, which shows that outsiders don't know this shortcoming very well.

The head of Qingcheng School, known as Yu Dwarf in Jianghu, is called Yu because of his Taoist status. Like Mu, he always wanted to get the sword spectrum to ward off evil spirits, and directly participated in the murder of Lin family, which was one of the chief culprits.

Fighting requires the cooperation of dwarves.

Yu Canghai once fought many people, such as Mu, Yuan and so on, and almost lost many wars. In the battle with Mu Gaofeng, the dwarf was injured by Mu Gaofeng's darts, so he had to run away (Yu Canghai in the TV series is two people, which is very different from the original).

The upper body is a dwarf, and the lower body is a dwarf. If there were no midgets to fight with him, Yu Canghai would be like a basket case.