Episode 21 recap: Zeng Xiao Gong and Sun Beishan are forced to search for Huang Chao's treasure.

The members of Xuanju group escort Zeng Xiao Gong and Sun Beishan as they follow the map to find Huang Chao's treasure. They cross the river and continue walking towards a more mysterious direction. After reading his father's diary, Ma Long's expression becomes grave, and Ba Dou is extremely anxious. Ba Dou hurriedly asks what was written in Ma Long's father's diary, and Ma Long bluntly reveals Zeng Xiao Gong's identity.

Ba Dou is shocked because how could his father, who disappeared over twenty years ago, possibly know Zeng Xiao Gong. Ma Long calmly explains that his father investigated the case of Jin Long's disappearance and discovered Sun Beishan, who was stealing on behalf of his friend Zeng Qiming. Zeng Qiming was a descendant of the Wanderer Army, and he possessed the Jiangshan treasure chest. Zeng Qiming was also Zeng Xiao Gong's father. Later, Zeng Qiming was hunted by Xuanju and encountered Ma Long's father, whom he entrusted with the Jiangshan treasure chest. So now, Zeng Xiao Gong taking the treasure chest can be considered as a rightful return.

While the members of Xuanju are still on the way, Mu Teacher declares that she wants to see the Huang Chao treasure with her own eyes. As for why Sun Beishan and Zeng Xiao Gong were brought along, it is because Sun Beishan is more familiar with the underground situation, and Zeng Xiao Gong is the key to Huang Chao's treasure. Sun Zhengyi and Chen Dajia, who are locked in the car, manage to escape unnoticed.

Meanwhile, Ma Long and Ba Dou are also preparing their equipment to set off. Finally, the Xuanju group has a new breakthrough.