Episode 7 recap: Li Shao Tang impersonated someone to access the contact point.

Wen Yi Shan wanted to ask Ou Xiao An something, without Wei Qing Ming's approval, he went to the prison to see him, told him many things, and gave him a pen. After Wen Yi Shan left, Ou Xiao An looked at the pen, recalled some memories, and in order to escape from prison, he used the pen tip to attempt suicide, and was discovered and rushed to the hospital for emergency treatment.

When Wei Qing Ming found out, he blamed Wen Yi Shan, believing he should not have contacted the traitor, and now they need to find the mole within their organization, and absolutely cannot let anything happen to Ou Xiao An. Feng Yu Nian had a private talk with Li Shao Tang, and seeing that he did not inquire about Ou Xiao An's case, suspected that he was avoiding the issue.  

Li Shao Tang thought he should avoid suspicion and did not want to ask about the situation carelessly. Wen Yi Shan brought food to Ou Xiao An, and Ou Xiao An still remembered him. Wen Yi Shan hated him, because due to him, Wen Yi Shan had gone from being the chief to the deputy chief, and he wanted to ask him about his experiences over the years.

Ou Xiao An only remembered part of his memories, and he had once undergone drug experiments by the Japanese army in the laboratory. Wen Yi Shan helped Ou Xiao An recall his memories, urging him to find a way to prove his innocence. Feng Yu Nian revealed that Ou Xiao An only recognized Li Shao Tang as a Japanese spy, Li Shao Tang explained that he doubted the credibility of Ou Xiao An's words, believing that he had been loyal to the Party and the country all these years.

Feng Yu Nian told him to prove his innocence, as his wedding with Feng Jing Xian was approaching soon, and he did not want any complications. Ou Xiao An carefully recalled his memories, remembering the fragment when he parted ways with Feng Jing Xian, and that he had once reminded Li Shao Tang to bring back the Falling Cherry Blossom plan to Chongqing.

He looked at the pen on the table and used the tip to attempt suicide, being rushed to the hospital for emergency treatment. When Wei Qing Ming found out, he questioned Wen Yi Shan for seeing Ou Xiao An without permission, and said that before they find the mole, Ou Xiao An's life must be protected.

Wen Yi Shan was anxious, feeling that Wei Qing Ming was targeting him. A man brought some rice cakes to the cheongsam shop, and Wang Qiu Shui recognized him as her brother. The brother stated that his current identity is Huo Da Ming, and he had received orders from his superiors to contact Ou Xiao An to confirm his identity as a comrade, but if he could not find Ou Xiao An, he had to withdraw from Chongqing.

Wang Qiu Shui told him that Ou Xiao An's suicide attempt failed, and Huo Da Ming, hearing that the spy knew about Ou Xiao An's situation, wanted to meet her to cooperate. After Huo Da Ming left, Wang Qiu Shui reminded Old Lin that although Huo Da Ming is her brother, they cannot expose Qin Mo Qing's identity.

Ou Xiao An woke up and saw Qin Mo Qing watching over his bedside. He jokingly said he won't attempt suicide anymore. Qin Mo Qing asked him about the location of the gas grenade drop-off and the meaning of code 9548, but Ou Xiao An couldn't remember. Qin Mo Qing gave him a newspaper from the street, and Ou Xiao An discovered that the message planted in the paper matched the street code.

At the same time, Li Shao Tang also saw the message in the newspaper. Ou Xiao An took the opportunity when the doctor came in to knock him out and escape in disguise. He then went around looking for the address mentioned in the newspaper. Li Shao Tang got to Huo Da Ming first, confirmed the code, and told him that he was an informant developed by Lou Ming Yuan.

After understanding the situation, Huo Da Ming gave Li Shao Tang a new codebook and assigned him a new code name "Yellow Oriole". Ou Xiao An had the driver search everywhere but couldn't find what he was looking for. He then went to see Feng Jing Xian, explaining that he was not a traitor. Feng Jing Xian resented him, believing he had abandoned her for his job, and she had now found happiness.

Ou Xiao An hoped she could re-examine Li Shao Tang to prevent him from getting hurt. Back home, Feng Jing Xian looked at her reflection in the water and dreamed of her previous suicide attempt while waiting for Ou Xiao An. Li Shao Tang came to see her, and Feng Jing Xian suddenly inquired about his work, telling him that Ou Xiao An had visited her.

Li Shao Tang knew Ou Xiao An had defamed him, claiming he was a Japanese spy. He assured Feng Jing Xian that he was loyal to the party and nation and worthy of her trust. Huo Da Ming sent Wang Qiu Shui a theater ticket, inviting him to the transfer building to watch a play, and used the screen to inform him about Li Shao Tang's contact point.

Wang Qiu Shui hoped Li Shao Tang would be cautious and avoid frequent meetings, and wait for the organization to verify his identity before taking action. Feng Jing Xian looked troubled at the undelivered invitation, and Wu Ma told her it was Feng Yu Nian's request.

Li Shao Tang returned home and hid the codebook, when suddenly someone ambushed him from behind.