What subject is Xiaoxue having a baby at home and getting sick?

There are children at home. Xiaoxue's illness is a family with children. Part III, Episode 44

On the way to independence (Part 44), Xia Donghai and Liu Mei reminded each other not to have conflicts with their children, but when the couple came to their children's residence, they couldn't help complaining about their living conditions, which hit Xia Xue and Liu Xing's self-esteem again and they refused to go home.

In this struggle, Xia Donghai and Liu Mei couldn't help it. They decided to give their children a step down, so they both made up an excuse and moved to a nearby hotel. The two older children finally came back. When they got home, they all took a bath and had a good sleep. In the evening, Xia Xue overeated, Liu Xing took a cold bath and had a fever at night. Just when Yu Xia was at a loss and worried about them, Xia Donghai and Liu Mei came here. When they came back from the hospital, Xia Xue and Liu Xing refused to admit defeat and pretended that everything was fine. It was not until Liu Mei and Xia Donghai said that they really wanted to go on their honeymoon that the children panicked.