It is still in use in mainland China, Taiwan, Hong Kong, Macau, Malaysia, Singapore and the Chinese diaspora in Southeast Asia.
Liu Bowen is believed to have secured the throne for the Ming dynasty Emperor Hongwu by applying Qimen Dunjia to his strategic planning.
Qimen Dunjia is based on astronomical observations, and consists of various aspects of Chinese metaphysics, including the doctrines of yin and yang, five elements, the eight trigrams, the ten Heavenly Stems and the twelve Earthly Branches, as well as the twenty-four solar terms.
The various symbols rotate around the palaces with each double-hour of the day, making a total of 1,080 different configurations of the Qimen Dunjia cosmic board.
Any Qimen Dunjia situation may be interpreted or analyzed to respond to a wide variety of questions, or to solve a multitude of problems.