Episode 11 recap: Shen Congwu suspected that there were communists within the organization.

Wei Qingming recalled that he had tasked Miao Jiang with this matter. She had laid in ambush at the door of the Japanese military police, and witnessed Da Qiao and Ou Xiao An getting off the car. Miao Jiang immediately sprang into action, shooting and killing the two. After seeing them fall to the ground, they then left.

After their deaths, all the major newspapers had published news and photos of them. Wei Qingming did not understand what had gone wrong, and could only suspect that Miao Jiang had been covering for them, staging a false death scenario to show him. Wei Qingming recalled that in 1943 in Chongqing, Captain Jiang had decoded a Japanese telegram, and discovered Da Qiao's trace for the first time after his supposed death. Qin Moqing suspected that the "810" written in the telegram referred to the Japanese's continuing "Falling Cherry Blossom" plan.

Miao Jiang told this matter to Tanaka, and the Juntong (Military Statistics Bureau) made the capture of Da Qiao their top priority task. Tanaka continued to stay in Chongqing, and Miao Jiang felt she had been dragged into a deep abyss, as Tanaka continued to obtain intelligence from her. After seeing the telegram, Wei Qingming discovered that Da Qiao had an appointment in Hong Kong, and Ou Xiao An's name was among the accompanying personnel.

He believed that the Shanghai intelligence station had been destroyed due to Ou Xiao An's betrayal. Qin Moqing suspected the authenticity of these two telegrams, and wished to verify them before taking action. Wei Qingming was furious, blaming Wen Yishan for not properly guiding his student, and wanting to immediately lead a team to execute the mission in Hong Kong.

Qin Moqing applied to join, but was rejected by Wei Qingming, who did not want to use the people from the action department. Wen Yishan hoped they could bring Ou Xiao An back from Hong Kong for trial, and resolve Da Qiao on the spot. Wei Qingming agreed, and led a team including Miao Jiang to Hong Kong to carry out the mission.

At the hotel, Miao Jiang saw Tanaka, who had given her false information, hoping that Da Qiao would be completely eliminated from the Juntong's roster, and asked her to cooperate in completing the task. Wei Qingming's team had laid in ambush outside the hotel, waiting for Da Qiao and Ou Xiao An to disembark. Miao Jiang immediately sprang into action, spraying them with machine gun fire, killing them both. This photo immediately became public news.

When Wen Yishan learned of this, he was furious, accusing Wei Qingming of not keeping his promise. Wei Qingming falsely claimed that the circumstances at the time had forced them to execute Ou Xiao An, and he had just happened to use this opportunity to curry favor with his superiors.

Returning to 1945, Wen Yishan had someone perform an autopsy on Ando, and when Wei Qingming learned of this, he rushed to stop it, accusing him of unauthorized autopsy. Miao Jiang also intervened from the side.

Wen Yishan believed they must determine the cause of Ando's death, and could not let the body be removed. After thinking it over, Wei Qingming agreed, demanding the hospital provide the results within an hour.

After the doctor's examination, it was confirmed that Ando was poisoned by arsenic, and it was believed that all those who had contact with Ando were suspects. Mao Ren Xing strongly explained that he had searched Ou Xiao An, and Wen Yi Shan asked him to control the people who had contact with Ando.

Shen Cong Wu suddenly arrived at the Chongqing station, and Li Shao Tang publicly hoped that Shen Cong Wu would clear his name and stated that he would prove his innocence. Wei Qing Ming received Shen Cong Wu and gave him the station master's seat. Upon learning that Li Shao Tang's lie detector test had failed, Shen Cong Wu used his superior's pressure on Wei Qing Ming to have them quickly find the spy within the station.

Feng Yu Nian expressed that he would not cover up for Li Shao Tang, and Wei Qing Ming passed the problem to Wen Yi Shan. Shen Cong Wu demanded that Ou Xiao An be released, believing that the current important task was to find the bridge, and he wanted to stay at the Chongqing station as a special envoy to establish a special 810 investigation group.

After hearing this, Wei Qing Ming's expression changed, feeling that his authority had been bypassed. When the Japanese army encountered obstacles in the interior, Miao Jiang was asked by Tanaka to get a pass, reminding her not to forget her deer identity. The section chief, Liu, moved to live upstairs from Li Shao Tang, and coincidentally encountered Feng Jing Xian signing for items, which Feng Jing Xian thought were bought by Li Shao Tang.

While cleaning, she found a box in the bookcase and took it out to place it on the desk. Secretary Sun informed Li Shao Tang that Shen Cong Wu wanted to meet him in the evening. Ou Xiao An was released, and Wen Yi Shan arranged housing for him and had him join the 810 investigation team. Ou Xiao An firmly believed that Li Shao Tang was a spy, and his conviction was strengthened after confronting Ando.

Wen Yi Shan hoped that he would provide evidence, adjust his mentality, and continue to work with Li Shao Tang in the future. Qin Mo Qing informed Wang Qiu Shui about this matter, and the Military Statistics Department had not released the results of Li Shao Tang's lie detector test. Wang Qiu Shui could not make a judgment and could only temporarily believe Li Shao Tang, but Qin Mo Qing chose to trust Ou Xiao An. Wang Qiu Shui asked her to get close to Ou Xiao An and gain his trust.

Shen Cong Wu met with Li Shao Tang in the restaurant, remembering that the last time they had met was four years ago. Li Shao Tang knew that Shen Cong Wu intentionally made the station suspect him as a communist in order to draw out the external communist. Years ago, he had directly confessed to Shen Cong Wu that he was a communist, and Dai Li had asked Shen Cong Wu to keep this file, and now it has become useful. Shen Cong Wu confirmed that there was a communist code name "Ye Cao" within the station, and he deliberately exposed Li Shao Tang's problems during the lie detector test to attract "Ye Cao" to appear.