Neidan in the context of "Daoyin"

Taoism or Daoism (/ˈtaʊ.ɪzəm/ , /ˈdaʊ.ɪzəm/ ) is a philosophical and religious tradition indigenous to China, emphasizing harmony with the Tao 道 (Chinese: 道; pinyin: dào, pronounced (IPA): /tɑʊ̯/ (Chinese)). With a range of meaning in Chinese philosophy, translations of Tao include 'way', 'road', 'path', or 'technique', generally understood in the Taoist sense as an enigmatic process of transformation ultimately underlying reality. Taoist thought has informed the development of various practices within the Taoist tradition, ideation of mathematics and beyond, including forms of meditation, astrology, qigong, feng shui, and internal alchemy. A common goal of Taoist practice is self-cultivation, a deeper appreciation of the Tao, and more harmonious existence. Taoist ethics vary, but generally emphasize such virtues as effortless action, naturalness, simplicity, and the three treasures of compassion, frugality, and humility.

The core of Taoist thought crystallized during the early Warring States period (c. 450 – c. 300 BCE), during which the epigrammatic Tao Te Ching and the anecdotal Zhuangzi—widely regarded as the fundamental texts of Taoist philosophy—were largely composed. They form the core of a body of Taoist writings accrued over the following centuries, which was assembled by monks into the Daozang canon starting in the 5th century CE. Early Taoism drew upon diverse influences, including the Shang and Zhou state religions, Naturalism, Mohism, Confucianism, various Legalist theories, as well as the I Ching and Spring and Autumn Annals.

Taoist meditation (/ˈdaʊɪst/, /ˈtaʊ-/), also spelled Daoist (/ˈdaʊ-/), refers to the traditional meditative practices associated with the Chinese philosophy and religion of Taoism, including concentration, mindfulness, contemplation, and visualization. The earliest Chinese references to meditation date from the Warring States period (475–221 BCE).

Traditional Chinese medicine and Chinese martial arts have adapted certain Daoist meditative techniques. Some examples are Daoyin "guide and pull" breathing exercises, Neidan "internal alchemy" techniques, Neigong "internal skill" practices, Qigong breathing exercises, Zhan zhuang "standing like a post" techniques. The opposite direction of adoption has also taken place, when the martial art of Taijiquan, "great ultimate fist", became one of the practices of modern Daoist monks, while historically it was not among traditional techniques.

Lü Dongbin is a daoist scholar and poet who lived during the Tang dynasty in China, and whose lifetime supposedly spanned two hundred and twenty years. Elevated to the status of an immortal in the Chinese cultural sphere by Daoists, he is one of the most widely known of the group of deities known as the Eight Immortals. Lü is also a historical figure and mentioned in the official history book History of Song. He is widely considered to be one of the earliest masters of neidan, or internal alchemy. He is also depicted in art dressed as a scholar carrying a sword to dispel evil spirits.

The Secret of the Golden Flower (Chinese: 太乙金華宗旨; pinyin: Tàiyǐ Jīnhuá Zōngzhǐ) is a Chinese Taoist traditional medical textbook on neidan (inner alchemy) meditation, which also mixes Buddhist teachings with some Confucian thoughts. It was written by means of the spirit-writing (fuji) technique, through two groups, in 1688 and 1692. After publication of the translation by Richard Wilhelm, with commentary by Carl Gustav Jung, it became modernly popularized among Westerners as a Chinese "religious classic", and is read in psychological circles for analytical and transpersonal psychology considerations of Taoist meditations, although it received little attention in the East.

Waidan, translated as 'external alchemy' or 'external elixir', is the early branch of Chinese alchemy that focuses upon compounding elixirs of immortality by heating minerals, metals, and other natural substances in a luted crucible. The later branch of esoteric neidan 'inner alchemy', which borrowed doctrines and vocabulary from exoteric waidan, is based on allegorically producing elixirs within the endocrine or hormonal system of the practitioner's body, through Daoist meditation, diet, and physiological practices. The practice of waidan external alchemy originated in the early Han dynasty (206 BCE–220 CE), grew in popularity until the Tang (618–907), when neidan began and several emperors died from alchemical elixir poisoning, and gradually declined until the Ming dynasty (1368–1644).

The Three Treasures or Three Jewels (Chinese: 三寶; pinyin: sānbǎo; Wade–Giles: san-pao) are theoretical cornerstones in traditional Chinese medicine and Taoist cultivation practices such as neidan, qigong and tai chi. They are also known as jing, qi and shen (Chinese: 精氣神; pinyin: jīng-qì-shén; Wade–Giles: ching ch'i shen; "essence, breath, and spirit").