Huaizu (1744- 1832), a native of Gaoyou (now gaoyou county) in Jiangsu Province in the Qing Dynasty, was a proofreader of phonological exegesis. He studied under Dai Zhen and was a scholar when he was in Qianlong. He chose imperial academy Jishi Shu, Shangshu of the Ministry of Industry, Ph.D., Shaanxi Road Counselor and Yongding Yihe. The most famous works are Guangya Shuzheng and Reading Magazine. The ten volumes of Documentary Evidence seek righteousness by sound, which is not limited to form, strict but not chaotic. Eighty-two-volume magazines proofread classics, sub-books and history books, proofreading one word at a time, and proofreading all over the group, which is a model of proofreading. In phonology, there are 22 ancient rhymes, which have made great contributions. There are also masterpieces handed down from ancient times, such as Mao Shiqun's Classic Ancient Rhyme of Chu Ci, Shuowen Jiezi's Collation and Annotation, and Qi Xuan's Messenger's Explanation of Other Dialects.