1. Working hours: Lao Changhui has been engaged in clinical work for more than 30 years, and Wei has been engaged in clinical work in respiratory medicine for more than 20 years.

1. In terms of word-of-mouth, Lao Changhui-Guangdong Hospital of Integrated Traditional Chinese and Western Medicine ranked third among Foshan respiratory medicine experts, and Wei Chenggong-Guangdong Hospital of Integrated Traditional Chinese and Western Medicine ranked fifth. Therefore, Lao Changhui is very powerful. Traditional Chinese medicine is based on natural science, humanities, social philosophy and practical experience.