In ancient China, people knew about virtual things very early, and they were recorded in Zhouyi, Chinese medicine, Qigong, martial arts, Feng Shui and other Yi-ology works. The scientific achievement of Yi-ology is a scientific truth that has been strictly confirmed by thousands of years of social practice activities such as Chinese medicine, Qigong, Wushu, Feng Shui, Yi Bu and modern scientific experiments. Yi studies have strictly confirmed that virtual things are an objective substance. The Yi-ology divides substances into three categories: essence, qi and spirit, which correspond to particles, flow and body respectively. Essence is reality, spirit and qi are empty, spirit is static and qi is dynamic. Yi-ology calls virtual things emptiness, nothingness, nothingness, qi and geomantic omen, the space occupied by virtual things meridians, acupoints, fields and geomantic treasures, the gathering of virtual things in life as elixirs and relics-a special kind of physical objects, and the physical objects condensed by virtual things as essence. In the Yi-ology, essence is also called being, shape, image, device and quality, and qi is also called the qi of five elements, namely, the five substances of water, wood, fire, earth and gold (five elements). God is also called Tao, Yi, infinity, vitality, qi, righteousness and internal qi. The combination of primordial qi and five elements of qi is called six qi, and all six qi substances are empty. The relationship between essence, qi and spirit is like the relationship between ice and snow, running water and still water. Freshwater and geomantic omen have very similar characteristics, which is a good analogy. We can use the common sense of fresh water to help us understand the knowledge of geomantic omen, such as treating the floating objects in water as the essence of geomantic omen. Yi Xue said: "Nothing is born, nothing is returned. Qi produces essence, and essence is angry. Tao gives birth to one, two, three and everything. It is easy to give birth to Tai Chi, Tai Chi gives birth to two devices, and the second device gives birth to four images, and the four images give birth to gossip, and gossip gives birth to everything. "It is about the process that virtual things condense to produce real things, and the real things disintegrate and revert to virtual things, and the real things turn virtual into gas. Among them, the "four images" are "ionic" substances, which can be divided into four categories: simple elements of yin and yang and complex elements of yin and yang (such as Na+, Cl-, OH- and NH3+).
The application practice and scientific experiments of Yi-ology, such as Chinese medicine and Qigong, have strictly confirmed that meridians, acupoints and qi exist objectively, qi is an objective substance, and meridians and acupoints are an objective material system. Qi is bioenergy, and gas substance is bioenergy substance-body. Meridian points are the material system formed by virtual objects, the space occupied by virtual objects, and the virtual object system. Meridian theory plays an important guiding role in the practice of Yi-ology such as Chinese medicine and Qigong. Then (relic) is a group of bodies. Qi is divided into internal qi and external qi. Internal gas is the gas in the body, and external gas is the gas discharged from the body. Facts have proved that internal qi determines life and death, and external qi has obvious effects on various objects.