Qin Lang was suspicious at first, but he wasn't. Until episode 28, the masked man appeared again. He is Qin Lang's eldest brother Tan Chuan, who once worked as an official with Qin Lang.

Tan Chuan, Qin Lang and Yuan Changchun are sworn half-brothers, the eldest Tan Chuan, the second Qin Lang and the third Ge Changchun. They all like Xiang Rong, who has married Tan Chuan. At that time, Tan Chuan, Qin Lang and others came after Cao and other thieves. Unexpectedly, only Qin Lang survived. Tan Chuan was seriously injured by a thief to save Qin Lang. Qin Lang mistakenly thought that they were all dead, so he had a heart knot and left the chief.

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Tan Chuan, who was seriously injured, was saved by the thief. Thieves threatened the lives of Qin Lang, Xiang Yuerong and others, and forced Tan Chuan to join the killer organization. poison bee was a hidden weapon of the killer, just like the profiteer Wu Xu was stung to death by poison bee.

Tan Chuan wears a mask every time he goes on a mission to avoid revealing his true colors. He has played against Qin Lang and Zifeng. Tan Chuan is really bad, but he has to do it. There is still a trace of kindness in his heart.