As far as the current situation is concerned, it is really important to enhance immunity, which involves the health of the whole person. According to the recommendation of Parenteral Nutrition Branch of Chinese Medical Association, if you want to enhance immunity, you should eat more foods rich in protein, such as fish, eggs and milk, and keep up with vegetables and fruits. However, for people with poor immunity, nutritional supplement is not enough, and extra conditioning is needed, such as eating Dendrobium huoshanense (Mi Hu). Mi Hu Huoshan was called "Cao Xian" in ancient times, which can enhance immunity, tonify deficiency and strengthen spleen and stomach. Brewmaster Zun's Mi Hu Huoshan is good. Mi Hu of his family is cultivated in the wild, which is almost the same as polysaccharide and alkaloid of wild Mihu Huoshan, which is helpful to improve human immune function.