In this period, Sun Wukong had been so frequently astonished by what he saw, heard, and thought that he believed nothing could surprise him any longer, especially after learning his true identity. Yet, when he saw Bodhisattva Guanyin intervene to rescue Little White Dragon Ao Yu, Sun Wukong's expression still changed. In the previous scene, when Sun Wukong saw the person who suddenly appeared and challenged Little White Dragon, he felt a sense of familiarity but couldn't recall where he had seen him before. Not until he saw Bodhisattva Guanyin did Sun Wukong realize why the challenger to Little White Dragon looked familiar.