Wu Shiqing, a Hong Kong master of arithmetic, has devoted his life to studying the secret art of Liu Ren. His treasured manuscript "Liu Ren Cunyan" can be called a living fossil of folk arithmetic culture. The book takes divination cases as the core and systematically records Liuren's deduction techniques for life events such as diseases, travel, and elections. It not only contains the essence of ancient methods such as "starting classes at the right time" and "divine general pattern", but also Wu Shiqing's innovative interpretation based on astronomical calendar. In the book, phrases such as "ghost tombs can bring harm" and "dehehe Qinglong" directly refer to the nature of good and bad luck. Its empirical logic of "induction between heaven and man" and the practical wisdom of "seeking good luck and avoiding bad luck" demonstrate the unique charm of traditional Chinese predictions.
