A four-year-old boy, the son of Gu Jingci. He is described as a little dumpling, withdrawn and mostly silent but not mute. He has been taking care of his bedridden father for three years after his grandmother Mrs. Gu passed away. He fell off a cliff while on the mountain and lost a leg according to the original story. He is sensible, observant, and deeply attached to his father. He shows curiosity and confusion toward Mo Sangsang's changed behavior.
