Male character, also referred to as the old doctor, an elderly doctor at the Chinese medicine pharmacy in the town hospital who wears reading glasses. He is familiar with Gu Nanzhi and is better at dispensing medicine. He understood Gu Nanzhi's coded message about investigating the embezzlement of Xie Zhenting's allowance. He gave only a small amount of medicine, calling him stingy, but also reminded Gu Nanzhi to do what she should do.
