"Secret Book of Character Testing" is a special book that specifically explains ancient calligraphy techniques, referencing ancient theories such as Yin and Yang, Five Elements, Six Gods, and Bagua. The book systematically summarizes a complete set of calligraphy methods, listing six categories: ten methods of character testing, six methods of Xinyi, large method of character testing, double sentence pattern method, loose pattern method, and Zhili character testing method. There is also a chapter on Zazhan Fu. The book interprets the structure, strokes, glyph changes of Chinese characters, etc., And combines the background of the test taker and other factors to infer the good and bad luck of things and the development direction of personnel. It also contains a large number of vivid examples, covering many aspects of life such as imperial examination career, marriage, wealth gain and loss, disease, life and death, etc.
