Episode Summary
Suspicions, a hot springs trip, and family tensions collide. Li Yan and Gu Kangqi's amateur investigation of Xu Wenbin takes a turn, while a planned romantic getaway for Gu Yunsu and Xu Wenbin becomes a crowded family affair. Li Jianxiong's traditional views and a hidden pregnancy cause friction with Wu Limei.

Spoiler Alert
This episode dives deep into family dynamics, unexpected pregnancies, and budding romances, all with a dash of amateur sleuthing.
The Spy Game: Li Yan and Gu Kangqi have decided to play detective, tailing Xu Wenbin. Gu Kangqi is particularly excitable, treating every mundane detail, like Xu Wenbin taking the bus, as a major revelation. He even drags Li Yan out of school to witness these "clues," convinced that a respected doctor like Xu Wenbin should own a car. Their surveillance also reveals Xu Wenbin's close relationship with a young boy, leading them to jump to the conclusion that it's his secret child.
Hospital Visits and Budding Romance: Meanwhile, Gu Yunsu and Li Jianxiong accompany Wu Limei for her prenatal checkup. The baby is healthy, and Li Jianxiong's excitement leads him to want more "practice," much to Wu Limei's amusement. She comments on how he's becoming more affectionate with age. However, Wu Limei also senses that Gu Yunsu's heart isn't with her anymore. She encourages her daughter to pursue Xu Wenbin. Xu Wenbin, though busy with patients, makes a point of asking Gu Yunsu out on a New Year's date, sending her into a giddy, almost clumsy state of happiness.
Traditional Values and Insecurities: Li Jianxiong overhears some nurses discussing a pregnant patient's discomfort with a male doctor performing a manual examination. This triggers his own traditional beliefs, and he becomes uneasy about Xu Wenbin being both Wu Limei's doctor and their future son-in-law. His discomfort is evident as he absentmindedly burns his hand while getting water, lost in thought.
Hot Springs Getaway (and Complications): Xu Wenbin plans a New Year's hot springs trip with Gu Yunsu. Gu Yunsu, seeking advice on appropriate sleepwear for the romantic occasion, turns to Jingjing, who lends her a less childish outfit. Li Jianxiong, having convinced Wu Limei, decides to join the trip with Gu Yunsu, aiming to celebrate Gu Yunsu's birthday (which falls on New Year's) with a larger group.
Gu Yunsu, unable to dissuade her mother, reluctantly agrees to the expanded group. Things get even more crowded when Li Yan, having finished an exam early, joins the trip. Upon arrival, a mix-up at the hotel leaves Xu Wenbin with only one upgraded garden suite instead of the two rooms he booked. The final unexpected guest is Gu Kangqi, who had already booked his own room. Li Yan, not wanting to share a room with Xu Wenbin, opts to stay with Gu Kangqi.
Awkwardness and Understanding: That evening, Xu Wenbin, unable to sleep, invites Gu Yunsu for a walk. Gu Yunsu apologizes for the awkwardness of the trip, but Xu Wenbin surprisingly finds the family atmosphere pleasant, contrasting with his own more formal family relationships. He expresses his envy of Gu Yunsu's close-knit family.
A Husband's Secret, A Wife's Anger: The next day, Li Jianxiong encounters a colleague at the hotel restaurant but deliberately hides Wu Limei's pregnancy. This deeply upsets Wu Limei, who believes he's ashamed of her condition. She storms off to their room. Gu Yunsu, realizing they've argued, sends Xu Wenbin to comfort Li Jianxiong while she checks on her mother. Wu Limei explains the situation to Gu Yunsu, who then takes her for a spa treatment to lift her spirits.