Actually, the person least adapted to this cold season is Shuangshuang, because during past cold seasons, Shuangshuang was always sandwiched between her Father Tieh and Ah Ma Grass while sleeping. The warmth from the two people, along with many beast skins over them early, made Shuangshuang not feel too much hardship.
This year, Shuangshuang's health improved, so she naturally felt embarrassed to lie between her parents while sleeping. Tie He and Cao have a very good relationship and like to get together intimately whenever they have nothing to do.
In the past, Shuangshuang was physically weak, so being a third wheel was excusable, but now that her health has improved, Shuangshuang really feels embarrassed to continue being a third wheel, preventing her Father and Mother from having the opportunity to be intimate together.