This lesson will introduce the tenets and corresponding allusions in ancient TCM classics such as Huangdi Neijing, Synopsis of Golden Chamber and Treatise on Febrile Diseases. For example, according to Huangdi Neijing, the three months of spring are called the time new and the beginning of life. The whole of nature is full of life, and everything seems to be flourishing. At this time, people should go to bed early and get up early, and they can walk in the garden to keep their mood good and their minds open, and to maintain their vitality. Don’t kill indiscriminately, give more, take less, reward more, and punish less. This is the way to adapt to spring and maintain vitality. If you disobey the rule, the liver will be damaged, which will make the insufficiency for the qi of summer, and cold pathological changes will occur in summer. This course also covers other stories of health care for people of different ages in different climates and seasons.