Pan Yang, also known as the Trinity Plate in the world, is determined by the number of Yin and Yang in the river charts of Najia and heavenly stems and earthly branches. The red word is Yang, and the black word is Yin. Take the three mountains of Zhenguan as an example. A and B belong to Yang and are scarlet letters, while bases belong to Yin and black characters.
Pan Jiang, also known as Sanyuanpan, uses Yin and Yang gossip in its twenty-four mountains, and the scarlet letter and three black characters in three mountains are used alternately.
There is also a comprehensive disk. The red and black of the Twenty-four Mountains are the same as the three-in-one plate, but the contents of the plate have sixty-four hexagrams and other layers.
Last year, the waterproof and shockproof automatic geomantic compass was developed, and its disk surface was also divided into three types: three-in-one, three-in-one and comprehensive, which greatly improved the measurement accuracy of geomantic compass.