There is a misconception in the study of dialects in Chinese literature: due to the repeated copying and engraving by literati, there are few traces of dialects in historical texts. Language masters after Yang Xiong, such as Guo Pu, Yan Zhitui, Lu Fayan, Lu Deming, Gu Yanwu, Dai Zhen, Wang Niansun, Jiang Yong, Jiang Yougao, Zhan ...