Geomantic omen was called Modern Chinese Dictionary in ancient times. The definition of the word geomantic omen is: it refers to the geographical situation of residential bases and cemeteries, such as the context and the trend of mountains and rivers. Superstitious people believe that the quality of geomantic omen can affect the rise and fall of families and children. Another reason why Feng Shui is regarded as superstition is that practitioners are mixed. Nowadays, people are fake feng shui masters with little knowledge. Except for a few, most underground feng shui masters make a living by swindling and cheating. China geomantic omen, or geomantic omen, now known as residential environmentology, originated in primitive times, took shape in the Yao and Shun periods, matured in the Han and Tang Dynasties and flourished in the Ming and Qing Dynasties. Fengshui is a valuable experience accumulated by human beings in their long-term life practice. Facing the sun, sheltering from the wind and rain, preventing fire, being close to water sources and facilitating travel have become the most basic living theories. For thousands or even tens of thousands of years, people have constantly summarized the advantages and disadvantages of living environment, and in the Han and Tang Dynasties, a very mature and systematic theory of China's geomantic omen was formed. Tsing Yi, one of Peng Zuba's disciples, said: Internal qi is born, external qi is shaped, internal and external multiplication, and Feng Shui is self-contained. Guo Pu, a native of Jin Dynasty, explained geomantic omen in Funeral Scripture: Qi dissipates by wind, and the boundary water stops. The ancients got together to make it last for a long time, but stopped doing it, so it was called Feng Shui. Huai Nan Zi, which was conceived in Han Dynasty, recorded: the way of heaven and earth running. There are yin and yang changes in the moon, and there are also times when they collide and overlap with each other. The former is fierce and the latter is auspicious. Gai Kanyu actually means the way of heaven and earth. Xu Shen explained in Shuo Wen: Kan, Tian; I don't understand, tunnel. In fact, Feng Shui is a science that studies and guides people's living and living environment. The word feng shui originated in Fuxi era. According to the simple map developed by Taihao Fuxi, it is inferred that the earth has a period of geomantic omen. According to Su Wen Jing, Yan Di said: One fog, two geomantic omen, three landscapes, four hills, five rivers, six places, seven small waters, eight short waters and nine waterless. The feng shui referred to here should be the original meaning of feng shui. "Funeral Book" put forward geomantic omen for the first time: Qi rides the wind to disperse, and the boundary water stops. The ancients gathered together to make them stick together and stop their movements, so it was called Feng Shui. Feng Shui: Tai Chi gives birth to two instruments (yin and yang, positive and negative), two instruments give birth to four phases (five elements), four phases give birth to eight diagrams, and eight diagrams give birth to twenty-four mountains. Professor Xu Chaochao, a famous master of Feng Shui in Nanjing, believes that Feng Shui can be divided into dragon, cave, sand, water, direction, meaning, shape and sky (celestial layout). All advanced feng shui is based on these principles, but it should be calculated according to human numerology and nature. Because the famous saying of the former people is: one life, two luck, three feng shui, four products and five studies; Zen master Pan Guojing said: Everything in the universe is changing, and it has gone through four stages: formation, existence, badness and emptiness. China ancients called geomantic omen geomantic omen, also called geography. Let's read together: geomantic geography. We might as well explain it this way: the research and analysis theory of geomancy (observing the sky), geomancy (geodesy), wind (airspace), water (hydrology and water quality) and land (topography and geology). Qi dissipates by the wind, and the boundary water stops. A set of systematic and complete site selection theory of ancient homestead, cemetery, city and even country has a history of more than 1000 years in China. Only in modern times, due to the introduction of western planning and modern design theory, western learning was valued, and Feng Shui theory and Chinese medicine theory were despised together. In the Beiyang era, Chinese medicine was once classified as illegal deception. After the Cultural Revolution, however, in the process of building ancient cities, palaces and gardens, especially in the process of site selection and construction of ancient mausoleum buildings, Feng Shui theory was once in a theoretical guiding position. Therefore, without studying the theory of Feng Shui, it is impossible to make a reasonable explanation for the construction and layout of ancient buildings. Therefore, in the process of studying the planning and design of ancient buildings, it is necessary to have enough research on Feng Shui theory. It is necessary to understand and explain Feng Shui theory from a scientific perspective. Based on the understanding of Feng Shui theory, this paper expounds the practical significance of Feng Shui theory from the perspectives of ecology, human settlement environment and urban defense. It is also necessary to understand and explain Feng Shui theory from a scientific perspective. The core of Feng Shui theory is Qi, because the ancients believed that people were born, and breathing and death were the foundation of life. Wind and water are centered on Qi, which can be understood as serving Qi, absorbing and defining Qi. In the geographical situation of China, there is a large zonal structure every 8 degrees or so, such as the zonal structure of Zaoyinshan Mountain in Tianshan Mountain; The zonal structure of Kunlun Mountain, Jujube Tree and Qinling Mountains. There is a river between two mountains in the world of "Kao Gong Ji". There must be a road above the river. Gong Yu divided the mountains of China into four columns. Feng Shui calls the rolling mountains Long Mai. Long Mai originates from Kunlun Mountain in the northwest, and three Long Mai extend to the southeast. Bellon entered Shaanxi from Yinshan Mountain and Helan Mountain, starting from Taiyuan and ending at crossing the sea. Zhonglong entered the customs from Minshan and arrived at Taishan Sea. Nanlong entered the sea from Yunnan-Guizhou and Hunan to Fujian and Zhejiang. Every big Long Mai has a dry dragon, a branch dragon, a real dragon, a fake dragon, a flying dragon, a hidden dragon and a flash dragon. To investigate Feng Shui, we must first find out the context and conform to the trend of Long Mai. Long Mai's shape is different from its potential. Thousands of feet is the potential, the potential is the vision, and the shape is the close shot. Potential is the worship of form, and form is the product of potential. The potential is tangible, the tangible is knowable, the potential is outside, and the shape is inside. It looks like a wall and a balcony. The potential is a set of ups and downs, shaped like an isolated mountain. It is difficult to recognize the situation, but it is easy to observe the shape. The situation is cause and effect. If it is Ma Benteng, if it is flowing, I want it to be big and strong, different but specialized and smooth. Modeling should be thick, gas storage, gas storage. It is best to have Chaoan Mountain at the assembly point. The mountain facing the mountain is similar to the mountain facing the arch, just like the courtiers surrounding the monarch. The mountains in Chaoan can keep out the wind, which is very interesting. For example, Zhu Lei talks about the macro-environment cloud of the capital: the mountains come from the clouds, surrounded by the Yellow River in front, Mount Tai as the dragon on the left, Huashan as the tiger on the right, and the heights are precedent. Huainan mountain area is the second case, and Wuling mountain area in the south of the Yangtze River is the third case. Therefore, there is no place in ancient and modern China and abroad to build its capital than Hebei. As the saying goes, if there is no wind, it will be scattered, and if there is water, it will be divided. This is taking Beijing and the mountainous areas of China as examples. Observing the micro-environment from the macro-environment, we can know the external constraints and influences on the micro-environment, such as water source, climate, products, geology and so on. The good or bad of any homestead is determined by the general environment, just like the pulse-taking of traditional Chinese medicine. You can know the general situation of your body from * * * thin string pulse, which is weak, tight, undulating and fast, because it is determined by the functional state of the cardiovascular system. Only when the situation is perfect can the homestead be perfect. Every time you build a city, a building and a factory, you must first test the mountain environment. Think big, start small, you must worry about it first, and then get rich. How to distinguish water quality? Guanzhen believes that soil quality determines water quality, and water quality is judged by color. The water is white and sweet, yellow and smelly, black and bitter. Boshan Pian, a classic of geomantic omen, advocates seeking dragons to recognize qi, recognizing qi and tasting water. Its color is blue, it is sweet, its color is fragrant, and it is expensive. Its color is white, its ignorance is bright, its ignorance is warm, and it is expensive. Its color is light, pungent, strong and expensive. Bitter and sour, if it is steamed, it is not enough. The cloud of good and evil in the water in Jin Ping Mei is clear, sweet and delicious, which is the so-called "Long Mai's happiness spring is long". Spring is not full, and autumn is not dry. You'd better find a good hiding place here. Water in different areas contains different trace elements and chemicals, some of which can cause diseases and some can cure diseases. There is a mountain spring at the foot of Chengtian Elephant Trunk Mountain in Taishun, Zhejiang. The spring keeps steaming all year round. When the local people are sick, they will soak in the spring water, which is more effective than taking medicine. After inspection, it is found that the spring water contains a lot of radioactive element nitrogen. According to Shan Hai Jing ·Xi· Shan Jing, there is irrigation water beside Shishu Mountain, including running water, so as to spread cattle and horses without disease. There is a quequan spring in Tengchong County, Yunnan Province, which is crystal clear but lifeless. Ducks and birds will die in spring. According to the investigation of scientists, spring water contains a lot of cyanic acid and hydrogen chloride, which are highly toxic substances that kill living things. In the Romance of the Three Kingdoms, it is described that Shu soldiers went deep into the wild land and drank poison springs by mistake, causing heavy casualties, which may be related to this poison spring. It is not suitable to build a village near such a water source. The vast majority of springs in China have development value. Jinan, Shandong Province is known as the Spring City, and there are 1590 mineral water spots in Fujian Province, ranking first among all provinces in China, including 865 medical drinking mineral water. There is an eye milk spring in Fenghuang Mountain, Guangxi, like fruit juice. Use it to make tea, and the tea will not change its taste for a week. At the foot of Jiu Feng Ridge in Fuxili Township, Yongfeng County, Jiangxi Province, there is a one-square-meter-long flavor spring, just like the bitterness and sweetness of draft beer. Because spring water is filtered by underground minerals, it often contains minerals such as sodium, calcium, magnesium and hydrophobic, so oral administration, washing and bathing are undoubtedly beneficial to health. Stairs The stairs are the passages of the house, which can make the air pass from the first floor to the second or third floor. Stairs are divided into internal air stairs and external air stairs. It is lucky to unload the stairs inside, but it is unfortunate to unload the stairs outside. The internal air stairs are facing the door, and people can go up the stairs as soon as they turn a corner. You can see the stairs as soon as you enter the door. It is unlucky that the stairs are opposite to the door. In addition, the steps of stairs are also singular, such as 17 and 19 steps. Even numbers are more fierce, such as eighth order and twelfth order. If the house is large, the elegant semicircular staircase in the living room is the best design. The spiral staircase in the shop is also the best layout. Because anger and good luck spiral upward. In modern shopping centers, ladder elevators are usually used to transport guests, and there are few or no stairs. This is also the meaning of feng shui. It symbolizes that input is greater than output. Money is rolling in. The low ceiling and dim light on the same staircase are unlucky, which makes people feel suffocated and uneasy. Improvement: You can hang a mirror on the ceiling to strengthen the ancient name of Feng Shui.