Episode 6 recap: Tong Sheng chose to believe that Su Xing was a communist party member.

In Luo Guanying's plan, the only way to thoroughly gain Tong Jiang Nan's trust was to first fake their own deaths and then come back to life. Therefore, he had Dang Xunqi send people to place explosives in Tong's home, and when the timing was right, Luo Guanying would step forward to rescue everyone. This timing coincided with the day when Su Xing was scheduled to personally visit Tong Jiang Nan.

At the critical moment, Luo Guanying rushed into the study and threw the explosives out the window, saving the lives of everyone present. As a result, many democratic activists felt that Luo Guanying was the comrade responsible for receiving them, but they were also troubled by Su Xing's identity as a spy, feeling that they were now in danger. Nevertheless, Tong Jiang Nan still harbored doubts and did not fully trust Luo Guanying.

Tong Jiang Nan looked out the window and saw student Zhang Shaomu sending Tong Sheng back. Although the two looked like a perfect match, the king had the desire but the goddess lacked the heart, and Tong Sheng always treated Zhang Shaomu as a colleague. Because of Su Xing and Luo Guanying's consecutive visits, Tong Jiang Nan told his daughter about their visits and revealed Su Xing's current status, shocking Tong Sheng and causing her to recall the details of their past breakup, unable to calm her heart.

After Li Wenbo's tireless efforts, he finally managed to invite the number one hostess of the nightclub, Lin Shiman. Since Lin Shiman had long been acquainted with the special commissioner of the Nationalist Party, Li Wenbo wanted to cooperate with her to obtain some useful intelligence he needed.

Originally, Lin Shiman was a bit hesitant, but when she saw Li Wenbo take out two rolls of banknotes, she happily accepted the money, tacitly agreeing to the cooperation. In fact, Lin Shiman was a Nationalist Party spy herself, using her identity as a courtesan to facilitate intelligence transmission. She passed the new assignment from her superiors to her old acquaintance Dang Xunqi, emphasizing that the target must be eliminated.

Early in the morning, Professor Li Ruchen and his wife and children were hit by a car as they walked out of the alley, and he died on the spot. Tong Jiang Nan also received the news and was disbelieving, while Li Wenbo led a team to the scene, examined the body, and asked Li's wife some questions, and she revealed that her husband had been frequently in contact with Tong Jiang Nan recently.

Zhou Yaming came to discuss with Su Xing and the others as soon as he heard the news, believing that they did this to intimidate those patriotic individuals who wanted to return to the north, so that they would not dare to have any contact with the Communist Party. Wang Dalong was angry and anxious, fearing that Tong Jiang Nan would become the next victim.

However, Zhou Yamming calmed Wang Dalongy's emotions, indicating that the reason the Nationalist Party's agents did not act against Tong Jiangnan was that they wanted Tong Jiangnan's research results. As long as the research results were still in Tong Jiangnan's hands, it at least meant that he was still in a safe position.

Su Xing suspected that Li Rucheng's death was very likely due to Tong Jiangnan and others privately formulating an action plan, causing the plan to be exposed and seized by the Nationalist Party's agents. Soon, the police found a suspected perpetrator vehicle in the suburbs, and Li Wenbo led the team directly to the scene, confirming that this was the vehicle that had hit and killed Professor Li Rucheng.

Li Wenbo learned that Cha Liangjie wanted to investigate the source of the vehicle, but said it was useless to investigate this vehicle because it was a stolen vehicle, and the real perpetrator had long since fled. To prevent more casualties, Zhou Yamming had Su Xing immediately go see Tong Jiangnan, and arranged for some comrades to set up posts around the Tong family, closely monitoring everyone going in and out of the Tong family.

That night, Su Xing came to find Tong Jiangnan, reminding him that the Nationalist Party might still make a big move next, and hoping that Tong Jiangnan would be careful. Although Tong Jiangnan appeared calm on the surface, he was already disturbed in his heart, recalling that Li Rucheng had once proposed to help them borrow a boat to leave Hong Kong, and he had more trust in Su Xing's words.

Just as Su Xing was about to leave, he encountered Tong Sheng returning from outside, and the two looked at each other, with past events surging in their hearts. Su Xing hoped to talk to Tong Sheng alone, but was rejected by Tong Jiangnan. The next day, Su Xing went to the school to find Tong Sheng, and frankly told her the reason for leaving Tong Sheng back then, hoping to get her forgiveness.

Tong Sheng rejected Su Xing, and Zhang Shaomu discovered that Tong Sheng did not go to the laboratory but came home, and told his aunt about Su Xing and Aosheng's past, and his aunt instructed Zhang Shaomu to protect Tong Sheng. Luo Guanying found Dang Xunqi and asked him if he had sent someone to kill Li Rucheng, who was the person Luo Guanying was preparing to take away.

Xunqi explained helplessly that it was an order from the upper levels, because Li Rucheng had already contacted a merchant ship to take Tong Jiangnan quietly northward, and if this behavior was allowed, there would be endless troubles. Dang Xunqi reminded Luo Guanying that he should now go to intimidate Tong Jiangnan.

For this reason, Luo Guanying came to the school to find Tong Jiangnan, revealing that the Nationalist Party's agents had assassinated Li Rucheng, and pointing out that they were secretly planning to go north, and if he still wanted to ensure his safety, he must believe in himself and never make arbitrary actions again. Zhang Shaomu persuaded Tong Sheng to get out of the pain of the past, completely give up on Su Xing, and take this opportunity to express his intention to her, although Tong Sheng stated that she would never forgive Su Xing, but she could not accept Zhang Shaomu either.