Episode 4 recap: Qin Sheng reported Jin Xi's activities to the authorities.

At the doorstep of the Luo family, Peng Jin Xi wanted to get close to Luo Hong and even claimed not to fear Luo Shi Fu (Luo Hong's father). Luo Hong frightened him by calling out "Dad," and as a result, Peng Jin Xi ran away faster than a rabbit. Peng Jin Xi went to Shenyang to find Luo Hong, but the security guard at the gate refused to let him in and didn't allow him to leave his belongings at the guardhouse. Coincidentally, Luo Hong passed by and called out his name.

Luo Hong was angry because Peng Jin Xi mentioned breaking up with her in a letter. Facing the routine night patrol of the student union, she claimed not to know Peng Jin Xi, but later softened her stance and lied, saying that Peng Jin Xi was her uncle. Peng Jin Xi apologized for mistaking her and recited the letter he had written for her but hadn't sent. The two held hands.

Qin Sheng learned from his roommate that Luo Hong was chatting with a man who sounded a lot like Peng Jin Xi. He hurried over and saw the two holding hands, and in that moment, he felt both lost and jealous. Peng Jin Dong returned home from work to find three women making swimsuits, and it turned out they were no longer hiding it from him.

Peng's mother was formidable; with just a few words, Peng Jin Dong dared not say anything more. After the women finished making the swimsuits, Peng Jin Xi went to the beach to sell them. Luo Hong, who was on summer vacation, came to find him, and just being together made Luo Hong very happy.

Qin Sheng watched from a distance, consumed by jealousy that grew like rampant weeds. He asked his father to secure a job for Luo Xian at the supply and marketing cooperative, wanting Luo Hong to feel indebted to him. In order to prevent the women in the family from making swimsuits, Peng Jin Dong actually locked the sewing machine with a padlock and chain.

Unable to use the sewing machine, they resorted to sewing by hand. Luo Hong took the initiative to help and suggested dividing the work to improve efficiency.

For several consecutive days, Luo Hong was busy from early morning until late at night at the Peng family's house, and then Peng Jin Xi would escort her home. The days were fulfilling and joyful.

The method of locking the sewing machine didn't work, so Peng Jin Dong hid the swimsuits they had made overnight in the kitchen's soy sauce jar. The whole family searched everywhere for the swimsuits, and Peng Jin Dong went to the kitchen and discreetly stuffed each swimsuit into his pants. Qin Sheng instructed Luo Xian to keep a close eye on Luo Hong no matter what tomorrow, but when Luo Xian woke up, Luo Hong had already left.

Qin Sheng said that today was the time for the inspection team to investigate speculation and hoarding. Luo Xian thought it was a big problem and immediately went to the beach to intercept Qin Sheng and the inspection team. Peng Jin Dong also brought Tan You Wei to the beach and rescued Peng Jin Xi from the inspection team's hands.

Peng Jin Xi lied, saying that their family had a hereditary "old cold butt" condition, which is why he wore many pairs of swimsuits. Coincidentally, Peng Jin Dong also wore multiple swimsuits today, and with the presence of Tan You Wei, Peng Jin Xi was ultimately released.

Unwilling to give up, Qin Sheng took the family's camera and vowed to capture the "evidence" of Peng Jin Xi's wrongdoing. Luo Xian told Luo Shi Fu about what happened today, and he found the behavior of Peng Jin Dong and Peng Jin Xi amusing, while Luo Shi Fu thought the two of them had no shame.

Back at the Peng family's home, the family discussed today's events. Peng's mother believed that Tan You Wei was their benefactor, but Peng Jin Xiu disagreed and thought that Tan You Wei was seeking redemption. If Peng Jin Dong hadn't caught Peng Jin Xi in the first place, Peng Jin Xi would have been the only college student in the family by now.

Peng Jin Xi talked about the mysterious disappearance of the swimsuits today and told them that Peng Jin Dong had hidden the swimsuits in the kitchen's soy sauce jar. To avoid detection, he took the pants out of the jar and wore them. Peng's mother, Peng Jin Xiu, and Sun Shu Fen laughed uncontrollably, and Peng Jin Dong smiled shyly. The Peng family was filled with a cheerful and happy atmosphere.