Luan Haiyan was one of the characters in "Fight Through the Heavens" and was Xiao Yan's father. According to the novel, Luan Haiyan was the main character in a fantasy novel written by Tian Can Tudou,"Battle Through the Heavens". He was an elder of the Xiao clan and Xiao Yan's biological father. He was born in a wealthy family, but for some reason, he had a conflict with his family and finally chose to leave the family to go to the Heavenly Silkworm Cave to find the cultivation method. During the training process, Luan Haiyan gradually obtained a powerful strength and established a deep relationship with Xiao Yan. He taught Xiao Yan to practice the Xiao clan's Qi Method and played an important role in Xiao Yan's growth. He could be said to be one of Xiao Yan's first teachers. At the end of the novel, Luan Haiyan and Xiao Yan fought against the enemies of the Xiao clan and eventually became Xiao Yan's biological father.