Dan, Shan Ye, Yi, Shan Ye. Only the Tao is not right, so it is called Dan. The sky is high and the clouds are light, the ground is flat, the valley is full, and people are immortal. Inner alchemy is a practice mode which is guided by the idea of harmony between man and nature, takes the human body as a cauldron, takes essence as medicine and condenses in the body. Since Huangdi, the ancestor of Taoism in China, recorded his quest for Taoism in Guang Cheng Zi, Neidan has experienced a development process of 5,000 years. The ancestors of Dan Daozu spread the origin of Dan Daoism very early. Tao Te Ching, Wen Zi, Liezi, Zhuangzi, Internal Strength, Xin Xue, Chu Ci, Yuan You, Yin Fu Jing and the works of Huang Lao School are the ancestral scriptures on which all the Dan Classics must be based, and all the Dan Classics in later generations developed from them, which has always been the outline of the internal Dan method.

Taoist health preservation can not only be achieved, but also rejuvenate. It can not only restore health, but also increase wisdom. For example, the method of "calming the heart and calming the nerves" can make the central nervous system of the brain rest fully and adjust the body function comprehensively, which has a unique effect on treating neurasthenia, insomnia and other diseases. Long-term practice can make people's eyes bright and their intelligence recover and develop. The method of "opening eight meridians" can relax meridians and activate collaterals, make hundred veins unblocked, keep skin smooth and shiny, and has a good preventive and therapeutic effect on arthritis and vasculitis. The method of "Jing Tian closing the door" can make people physically and mentally healthy and energetic, and has a unique effect on wet dream's disease such as nocturnal emission, impotence and kidney deficiency.

Taoism respects Laozi as the ancestor. Laozi, surnamed Li, formerly known as Bai Yang, was a great thinker and founder of Taoism in the Spring and Autumn Period, and he wrote The Tao Te Ching. Tao Te Ching became the theoretical basis of Taoist writings. According to legend, Lao Tzu passed on Jin Niang, Jin Niang passed on Baiyun, and Baiyun passed on to the king. Another said: I was born in the king.

Also known as Wang Shaoyang (alias Li Ningyang, that is, Li Tieguai), Donghua Emperor, later called the ancestor of the Northern Five Ancestors. People in the Han Dynasty. Life has a strange watch, and young people are really interested. The theory of true love on the white clouds: the gods in the sky are also the ability to lead him into the mountains, giving him a full set of Taoist secrets without passing them on. So I hid in the misty cave of Kunyu Mountain to practice my life. Later, Emperor Zhong Liquan of Zhengyang told him the truth.