A Gu Master who was heavily recruited by the Blood Severing Pavilion to train its killers. He had only one disciple. Both Misty River and his disciple died from Gu Insect backlash a few years ago, after which no one capable of using Gu appeared in the martial world. Fang Xun'gui had always wanted to know what secrets Misty River and Yuyi Yue's Master were hiding.
