The master and his disciples return to Wuji and tell everybody how they subdued the demon, and explain the reasons why this has all happened (Bodhisattva Manjusri had told them). Furthermore, they assure that the lion was a gelded one. So he had not sullied the queen and the consorts in the harem. After the master and his disciples have rested for some days, they continue on their journey to the west. They pass by Mount Hao. The demon living in Fire-cloud Cave on Mount Hao is called Boy Sage King. He is Red Boy, the son of the Bull Demon King. The demon changes himself into a child who has suffered misfortune, to attempt to trap the pilgrim monks.
師弟兄回烏雞國告知大家降妖經過，並說明前因後果（文殊告知）且證明獅子是騸過的——未曾淫亂內宮的人。師徒休息數日繼續西行，途經號山。號山火雲洞妖王稱聖嬰大王——牛魔王的兒子紅孩兒。妖怪假變一遭難的小孩來誘騙取經僧。