After the first month of the pregnancy, Xu Lifen noticed that the state of things had inexplicably gone from Chen Meili being a gestational surrogate and carrying her's and her husband's children to Chen Meili just being pregnant with Han Tao's twins.
No one treated Xu Lifen like the mother of the children and even when she tried to give suggestions and be fully involved in the birth process like was originally intended, the others just hushed her, mentioned the accident where she'd lost her baby and called her ignorant.
Three months into the pregnancy, the other women suggested that Chen Meili was moved from her own wing, that she had originally shared with Han Jinhai, to Xu Lifen's own family wing and this was allowed by the Han Madam.