Sweet Teeth

Librarian Zeng Li misunderstands dentist Ai Jingchu as a "scumbag" after hearing rumors, while her mother forces her to begin orthodontic treatment.

Zeng Li attends Ai Jingchu's class by mistake and clashes with him again, while Ma Yiyi suffers heartbreak after a breakup.

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Ai Jingchu stays overnight at Zeng Li's hotel and later saves an injured child, sparking rumors about them.

Zeng Li realizes Ai Jingchu was wrongly accused and begins seeing his caring side during a sunset outing.

Ai Jingchu and Zeng Li grow closer during movie and late-night food outings, while Liu Yucheng confesses to Wu Ying.

Rumors spread that Ai Jingchu has a girlfriend after opening WeChat, while he agrees to help at an orphanage.

Ai Jingchu protects Zeng Li from an awkward blind date situation, and the two face danger together on the road.

During New Year celebrations, Ai Jingchu secretly confesses to Zeng Li, but she fails to hear him.

Zeng Li discovers she accidentally kissed Ai Jingchu, leaving both embarrassed and confused.

Ai Jingchu comforts Zeng Li about her insecurities, while Wu Ying misunderstands Liu Yucheng's relationship with another girl.

Ai Jingchu plans a formal confession as Zeng Li attends a book signing event tied to her first love, Yu Yi.

Yu Yi returns to China, creating emotional confusion for Zeng Li as Ai Jingchu prepares to confess.

Ai Jingchu discovers Yu Yi also likes Zeng Li, leaving him emotionally conflicted.

Ai Jingchu learns he may go to Africa for medical aid, while Zeng Li realizes she truly loves him.

Multiple couples experience romantic breakthroughs during a ski trip, while Yu Yi notices Ai Jingchu's feelings for Zeng Li.

Ai Jingchu distances himself before leaving for Africa, causing misunderstandings and heartbreak for Zeng Li.

Ai Jingchu finally confesses properly to Zeng Li, and the two officially become a couple.

Zeng Li moves into Ai Jingchu's home temporarily, and their relationship becomes more serious.

Ai Jingchu and Zeng Li argue over Wu Ying's pregnancy, testing their relationship for the first time.

The couples reconcile, and Wu Ying decides to keep her baby with Liu Yucheng's support.

After returning from Africa, Ai Jingchu surprises Zeng Li with a heartfelt marriage proposal at the library.