Yes. According to the relevant information of Yang Lang's live broadcast, it can be seen that it is true that Yang Lang's live class is on Douyin. Yang Lang is currently the vice president of Xingning Traditional Chinese Medicine Hospital, a part-time associate professor at Guangzhou University of Traditional Chinese Medicine, a member of the China Association of Traditional Chinese Medicine, and a standing member of the Internal Medicine Professional Committee of the Guangdong Association of Traditional Chinese Medicine. He has been engaged in traditional Chinese medicine for 31 years.