I need to talk about Li Shu and Xiao Fu Shi because THIS is what got me. Like, this mother-daughter relationship is the emotional anchor of the entire book and I'm not even being dramatic.
Remember that scene where Xiao Fu Shi tells Li Shu 'Darling, let Dan Hong play with you today. In a little while, Mother will definitely take you out to play, alright?' And Li Shu sees 'the determined glint in Xiao Fu Shi's eyes' and thinks: 'A woman may be gentle by nature, but as a mother, she becomes strong.' I literally gasped. That line alone is worth the price of admission.
What's fascinating is how their roles have shifted. In the previous life, Li Shu was probably just a child watching her mother deteriorate. But now, with rebirth memories, SHE's the one analyzing, suspecting, protecting. When Xiao Fu Shi says she's going to visit Fu Shi despite being pregnant, Li Shu immediately says 'I will accompany you, Mother. I will protect you.' And then she holds her mother's hand. The warmth of that little hand—chef's kiss.
But let's also talk about the rivalry between Xiao Fu Shi and Fu Shi. This isn't simple hatred. Fu Shi is the 'usurper' in name but the rightful wife by marriage. Xiao Fu Shi is the 'usurper' in action but loved by the husband. The text says Fu Shi 'entered the household a year before Xiao Fu Shi' and Liu Chengxu 'didn't even glance her way' initially. Now Fu Shi is the one abandoned, and Xiao Fu Shi—who Liu Chengxu initially treated poorly because he thought she 'usurped another's place'—is the one he's infatuated with.
The concubines are interesting too. Concubine Ding is the only one who actually feels SYMPATHY for Xiao Fu Shi when she first arrives. She worries about her. But now? She's uneasy. 'If the Master had initially seen Xiao Fu Shi as a substitute, why would she regain favor now that the original was back?' That's the kind of quiet, calculated thinking that keeps you up at night.