Zhou neglected his health because of his work and suffered from gastric cancer. Dong Mei, as a doctor, has been helping Zhou recuperate after knowing that he has stomach trouble.
However, Zhou himself didn't care. Instead, I often neglected the health of my stomach because of my work, and finally got gastric cancer. For Zhou, although his whole life is for work, in the eyes of Zhou family, Zhou is not the son of Zhou family, but everyone's son.
In Zhou's mind, it is obvious that everyone is much more important than his family. Therefore, even if Zhou worked, it didn't bring any benefits to his family, or even changed his parents' living conditions to make them live better.