In Feng Jicai's novel," The Man of the Worldly World," Boss Mao claimed that the second young master Cai had become a spirit. This was because in the novel, the second young master Cai was a martial arts expert. He had already reached a realm of martial arts, where he could communicate with heaven and earth and possess supernatural abilities. On the other hand, Boss Mao was an expert who cultivated Daoist martial arts. After hearing about Second Young Master Cai's ability, he thought that Second Young Master Cai had already become a spirit, so he called him that. This statement also expressed Boss Mao's respect and admiration for Second Young Master Cai's ability.