Pulmonologist Zhu Qianqian's only goal in life was to make lots and lots of money. Because of this, she was ridiculously miserly. In other departments, as long as the rotation doctors properly worked hard, the teaching doctor would at least reward them with small amounts of money. The teaching doctor paying for meals and drinks would be considered commonplace. Everyone knew that the new intern doctors had to work hard while receiving only meager salaries. The teaching doctors paying for the intern doctors' food and drink equaled their recognition and acceptance of the intern doctors.
Zhu Qianqian didn't care about any of this at all. She felt that it was only natural for the rotation doctors to have to work their hardest for very little in return. She believed that it was their fault for not having medical licenses!