Dr. Daquan Xu has practiced as a general surgeon and orthopedic surgeon for eight years in Beijing, China. He has worked in neuroanatomy and clinical research in pain management for fifteen years in Canada and the US. From 2012 to 2015, he was an independent reviewer of a peer-review journal, "Regional Anesthesia and Pain Management". He has numerous research publications in the field of clinical medicine and biomedical sciences. In Chinese medicine, he specializes as follows.