1, professional knowledge: Kang, a doctor of stomatology, has a profound foundation in stomatology and many years of clinical practice experience, and has in-depth research on surgical treatment principles and surgical skills of benign and malignant tumors in oral and maxillofacial region. Although Wang Yong has the reporter background and interview experience of Xinhua News Agency, these experiences are not directly related to tooth extraction.

2. Technical ability: Kang is good at all kinds of tooth extraction in oral and maxillofacial clinic, including painless and minimally invasive extraction of impacted wisdom teeth. He studied in Orthognathic Surgery Center of Oral and Maxillofacial Surgery in Peking University, and mastered the principles and surgical methods of orthognathic surgery, but Wang Yong had no technical ability in these aspects. Therefore, Kang's is stronger.