Tang Wulin, the hero of the Legend of the Dragon King in Douluo, written by Tang Jiasan, is the son of Tang Sanhe, the strongest ruler in the divine world, the younger brother of the butterfly god Tang, and the brother-in-law of the emotional god Huo. Because King Jinlong killed him in the melee of the gods, in order to prevent the divine power from hurting him, Tang Sanhe and Xiaowu were forced to send their newborn Wulin to Douluo mainland, and put a 18 seal on him with blood, which was later adopted by Tang Ziran and his wife.