Xu Zhiguo is an elderly traditional Chinese medicine (TCM) doctor at the clinic. He is knowledgeable and experienced, not just a barefoot doctor. He is responsible for diagnosing patients and decocting medicine in the pharmacy. He is hiring a new TCM practitioner due to staff shortages and administers a written exam to Su Yuanyuan. He is busy with patients, especially during seasonal changes, and has a favorable impression of Su Yuanyuan's calmness and competence. He allows Lu Mingzhu to enter the pharmacy area, though he warns her not to touch anything. He explains the medicine decoction process to the curious child.
