This story is fundamentally about what makes a family. Not biology. Not blood. Choice.
Every major character in these chapters has to confront this question. Qin Fang chose to love Zhao Qianyu for twelve years, and that choice hasn't been erased by a DNA test. Zhou Dahua chose to raise Zhao Xiaoyu, and that bond is real too. The Sheng family chose to love the girl they thought was theirs, and their grief proves it.
Sheng Qianyu's decision to return to the Sheng family is itself a statement about this theme. She could have stayed with the Zhao family—they're wealthier, more prestigious, and they clearly love her. But she recognizes that the Zhao family already has their biological daughter, and staying would create an impossible situation. Her choice is about fairness, about minimizing harm, about being practical. It's also, I think, about respecting the bonds that already exist.
The engagement subplot with Chen Zhou adds another layer. The arrangement was made between families, not between individuals. Chen Zhou wants to break it because he likes Sheng Qianyu, but she refuses to let him. Why? Because the engagement was always meant for Zhao Xiaoyu, and she won't let her own happiness come at the cost of creating more chaos. She's protecting everyone, even the person she's supposed to be engaged to.
There's also the symbol of the bus ride. Sheng Qianyu, who has never taken public transportation in her life, choosing to ride a bus instead of accepting a car from her father. It's a small detail, but it represents her independence, her willingness to step into a new world on her own terms. She's not being carried into her new life—she's walking there.
And the malted milk moment with Sheng Jiandang? It's a symbol of the old family's habits, the routines built around a child who is no longer there. His guilt at almost offering it to Sheng Qianyu shows how deeply those habits are embedded. But her response—telling him not to avoid mentioning Xiao Yu—suggests that the old bonds don't have to die. They can coexist with the new ones.
What I find most compelling is that the story doesn't resolve this theme neatly. There's no easy answer to "which family is the real family?" Both are. Both matter. And Sheng Qianyu is brave enough to acknowledge that instead of forcing everyone to choose.