Bagua is an ancient Chinese symbolic system that originated in the Book of Changes (also known as Zhou Yi or Changyi) in the pre-Qin period of China. Bagua is made up of eight basic figures, each of which is a combination of three parallel solid lines (representing yang) and dotted lines (representing yin), and the number and position of lines in each figure are different. These eight types of graphics have specific names: Qian, Kun, Zhen, Xun, Kan, Li, Gen, and Dui.
The basic meaning of gossip is as follows:
Qian: Represents concepts such as the sky, creativity, fatherhood, and strength. Kun (地): represents the concepts of earth, motherhood, conformity, and tolerance. Zhen (thunder): represents concepts such as thunder, vibration, action, and firstborn. Tatsumi (wind): Represents concepts such as wind, gentleness, entry, and eldest daughter. Kan (water): represents the concepts of water, danger, depth, second son, etc. Li(火): Represents concepts such as fire, brightness, attachment, and middle woman. Gen (mountain): represents concepts such as mountain, stillness, thinking, and few. Dui (Ze): represents the concept of lake, joy, tongue, maiden, etc. The operation of Bagua is related to the "hexagram change" in the Book of Changes. In the Book of Changes, the eight trigrams are the basis for the sixty-four hexagrams. Through different combinations, two trigrams can be combined into one of the sixty-four hexagrams, each with its own specific meaning and interpretation.
Specifically, the operation of Bagua follows the following rules:
Each Bagua has a fixed number (1-8), usually in the order of the innate Bagua (Qian1, Dui 2, Li3, Zhen 4, Xun 5, Kan 6, Gen 7, Kun 8) or the acquired Bagua (Qian 1, Kun 2, Zhen 3, Xun 4, Kan 5, Li 6, Gen 7, Dui 8). The Bagua can also be arranged according to the orientation of the innate Bagua (Qiannan, Kunbei, Lidong, Kanxi, Zhendong, Dudongnan, Xunxinan, Genxi) or the acquired Bagua (Qianbei, Kunnan, Zhendong, Xundongnan, Kanbei, Linan, Gendong, Duixi). In divination practice, it is common to use three coins or other tools to generate a random combination of eight trigrams. Three coins are tossed each time, with the obverse representing 3 and the reverse representing 2, and the results of the six tosses are added together to obtain a total corresponding to a Bagua number, thus determining the upper and lower hexagrams. The combination of the upper and lower hexagrams forms a complete hexagram, which represents the answer to the question asked by the soothsayer or the ** of a certain situation. 
The operation of Bagua is not only used for divination, but also widely used in traditional Chinese culture in the fields of philosophy, feng shui, and traditional Chinese medicine. They are considered to be symbols of natural and human social phenomena, reflecting the universal laws of yin and yang balance and change in the universe.