feature of product At the time of divination: an algorithm that imitates the number of Dajing in Yijing. Every time you tap Taiji in the application, a cymbal containing four elements is generated from the bottom to the top. When interpreting hexagrams: The hexagrams of the hexagrams will be displayed separately, so that the digua can directly view important information. In addition, in order for friends to understand this ancient classic with modern thinking, a special explanation is attached