Chaozhou dialect belongs to Min dialect. Min dialect and Cantonese are one of the eight major dialects in China, with nine tones in Cantonese and eight tones in Chaozhou dialect. Chaozhou dialect is a sub-dialect of Minnan dialect in Fujian dialect. Chaozhou dialect and even the whole Minnan dialect can be regarded as independent languages because they can't understand each other. Chaozhou dialect in different places in Chaoshan area also has different accents, and languages in different cities or regions have their own characteristics, and Minnan dialect in Fujian and Taiwan is very different. Grammar, like Fujian and Taiwan films, has a high degree of vocabulary correspondence, but there are obvious differences in pronunciation and intonation, which makes it difficult to communicate. Chaozhou dialect contains many ancient Chinese elements, which originated from Putian dialect in southern Fujian. Due to the war caused by foreign invasion in the late Southern Song Dynasty, hundreds of thousands of Putian people immigrated to Chaozhou today. In the middle and late Tang Dynasty, the Northern Song Dynasty, the end of the Southern Song Dynasty and the end of the Yuan Dynasty, Putian people migrated to Chaozhou one after another during the bad coastal migration in the Ming and Qing Dynasties. The reason for immigration is that Putian is overpopulated and fled the war caused by foreign invasion. At the end of the Southern Song Dynasty, the war triggered by the invasion of fleeing foreigners was the largest in the last years of the Southern Song Dynasty. Now hundreds of thousands of Putian people immigrate to Chaozhou.