Confucius said to his students, "Poetry and calligraphy are polite." (The Analects of Confucius). Confucius used Lu every day, but he used elegant words when he recited poems and attended sacrifices. The development of education has promoted the popularization of elegant speech, which has gradually become synonymous with communication in all walks of life.
According to the description of Yayan in Qieyun, the first phonological monograph in China, it can be confirmed that the main features of Yayan's phonology are: full-voiced stops and full-voiced stops, with tongue sounds; No warping; There are a whole set of nasal vowels and stop vowels; There are flat, up, far and in tone.
Due to many civil wars and disasters in the north, the northern minorities ruled for a long time, especially in the late Tang Dynasty, most of the Han people moved south, and the elegant speech and rhyme gradually moved south to Jiangxi and Hunan, and moved to Shaoguan and the Pearl River Basin when the Southern Tang Dynasty perished, and then moved to Guangdong and Guangxi on both sides of the Pearl River Basin in the late Song Dynasty.
2/kloc-at the beginning of the 20th century, the phonological features of Yayan could not be found in Mandarin, northern dialects and the area north of the Yangtze River valley. Among the seven dialects in China, Cantonese bears the most critical component of elegance.
Everyone in the linguistic field agrees that the inheritor of Yayan is Cantonese and the pronunciation of the Central Plains is Hakka. Mandarin (Mandarin, Mandarin) mostly comes from ethnic minorities, and Wu Xiang dialect is the real southern Chinese (inherited from Changsha dialect). Jiangxi dialect, Hakka dialect, Fujian dialect and Cantonese are all variants of ancient northern dialects moving southward.
Through the comparison of the above key elements, we can confirm that Pingjiang dialect and Cantonese are homologous, which is why we find that Cantonese people can understand Pingjiang dialect in our life. It is different from southern Chinese (Changsha dialect) in Hunan. Pingjiang dialect is a branch of ancient Chinese that stayed in Pingjiang as the Han people moved south. Because its geographical location is in the north of Guangdong, according to the law of our ancestors' migration, every time they migrate to a place suitable for survival, they will not leave, and later people will continue to migrate. Therefore, it can be inferred that Pingjiang dialect of Han nationality migrated earlier than Cantonese and moved south earlier, which can prove that Pingjiang dialect belongs to earlier than Cantonese.