Cheng Huize also stood up to prove that Yun Muzhi was not dead, and together with Ke Jingping created the fact that Yun Hongshen was the Japanese spy.Yun Hongshen actually admitted that Yun Muzhi was still alive, and seemed to admit that he had been blackmailed by the Japanese and became a traitor.Yun Hongshen was arrested and imprisoned. Xue Yue ordered that Yun Hongshen should not be allowed to die until everything was found out.Secretary Wu came to tell the angry Yun Hongqi that Yun Hongshen was not a traitor, but that everything was a trap set by Yun Hongshen with himself as a dead chess piece.Wen Yeming met with Yun Hongqi and told him that he chose to side with Yun Hongshen, and the two decided to find evidence to prove Yun Hongshen's innocence.Yun Hongqi went to Secretary Wu to discuss countermeasures. Secretary Wu believed that Yun Hongshen's life was not in danger for the time being, so he proposed to find a way to install a bug in Ke Jingping's secret room.Zhu He also discovered flaws in Ke Jingping's rhetoric, had doubts about Ke Jingping's arguments, and found the investigation clues left by Yun Hongshen for him.Wen Yeming and Yun Hongqi teamed up to attract Ke Jingping's attention, and Secretary Wu used Xu Bi, a secret agent, to install surveillance in Ke Jingping's secret room.Ke Jingping interrogated Yun Hongshen alone in a secret room and asked Yun Hongshen to plead guilty. However, Yun Hongshen was tricked into confessing that he was Kunwu, and was passed on to Xue Yue and everyone by Zhu He through monitoring. Ke Jingping was exposed and killed.Yun Hongshen performed meritorious service and was received by senior military officials, only to discover that there were also his father's comrades among the senior military officials.The first Battle of Changsha started, the Japanese army failed, and China achieved a major victory.