Luo Jia zong mu Tang Guangdong century-old ke Xuan's home is authentic. Zongmutang was first founded in the second year of Yongzheng in Qing Dynasty (1724). In the seventh year of Yongzheng (1729), Yong Zhengdi granted Zongmutang the issuance of Luo Shu. Since the Yongzheng period of the Qing Dynasty, Luo Qinghui has a history of nearly 300 years, and it is unique and occupies a prominent position among all the "general books" in the country. Its contents include calendar, geography and daily lessons. Among them, Japanese lessons and calendars are its essence, geography is its subsidiary, and fortune telling is not its content. It has a long history, rich content, strong philosophy and distinctive features.