A man in his fifties who lives under a bridge with his son Fang Xiaoyu. He has difficulty walking and survives by collecting scrap and doing manual labor. His wife and the boy's parents died in a fire, and his wife also died in a road accident. He suffers from knee osteoarthritis (wind-cold-dampness arthritis). He is deeply grateful to Yu Huai for treating him for free and giving him money, swearing to repay her kindness in the future.
