The calculation method of Luojia Tongshu in Xingning County, Guangdong Province was first created in the second year of Yongzheng in the Qing Dynasty (1724). It occupies an important position in the country and plays an important role in guiding people's production and life. The "Luojia Tongshu" calculated and published by this calculation method was approved by Emperor Yongzheng of the Qing Dynasty to be issued in the five provinces of South China. Its content is very rich and accurate. It mainly includes the lunar calendar, the first day, the mountain lesson, and marriage. There are secrets, explanations, and examples. The calculation is made using a 39-stem abacus, which is meticulous, profound, convenient and practical. The "Luojia Tongshu" calculated by this technique is a lunar and solar calendar. It follows the solar terms of Yaodian calendar in my country, combines the characteristics of Lingnan in China, and Luo Qinghui's original skills and experience, and uses the "Shengdu Table" to calculate the time, solar terms, and solar and lunar eclipses. At the same time, the solar terms are calculated according to the secret of "adding five days, adding three hours, subtracting one quarter, and advancing four minutes" summarized by himself. First calculate the "two equinoxes and two solstices" and then calculate the time and day of the 24 solar terms and their seasonal temperature differences. The scientific method is used to verify and reveal the phenomenon of natural law development, so as to guide people's production, life and marine space activities. The date selection is mainly based on the "orthodox five elements method" and "doushou five elements formula", with the principle of "avoiding evil, seeking profit, and seeking good", paying attention to the combination and changes of mountain lessons and people's eight characters, focusing on material, emphasizing movement, analyzing contradictions, and being good at dialectics. "Heuyou" includes mountain luck, 24 mountain gods of good and bad luck, and burial. "Mountain lessons" are lessons made by 24 mountains, including mountain luck, mountain life, penetrating sound, stars, Yaosha, Yangfu, self-emptiness, Chongding, elimination, dry fire, etc. "Marriage" includes big and small benefits, parents-in-law and mother-in-law. "Twenty-eight Mansions Good and Bad Determination Chart" has more than 20 animal pictures such as Jiao, leopard, pig, etc., and the date is recorded in 60 sixties. These provide specific applications for marriage, funeral, marriage, marriage, site selection, and house building. The almanac contains more than 30 items including "Centennial Chart", "Eight Diagrams", "Six Palm Formulas Chart to Determine the Situation", "Lucky and Inauspicious Degrees of the Twenty-Eight Constellations in the Compass", "General Introduction to Geography", and "General Principles of Water Law".