The name "whole gut" comes from the achievements of Mr. Li Wanshan, an overseas Chinese in Thailand, in treating digestive tract diseases with traditional Chinese medicine in the 194s. The earliest manufacturer of whole gut is Li Wanshan Pharmaceutical Co., Ltd. from Thailand, and its hewei whole gut is the most authentic and well-received product. At present, Guangdong Taienkang Pharmaceutical Co., Ltd. is the only general agent of the "hewei whole gut" product of Li Wanshan Pharmaceutical Co., Ltd. from Thailand.