汉语使用人口众多,分布地域辽阔,方言分歧复杂。从学术研究来说,汉语方言可以提供极有价值的研究资料。方言是不断变化的,尤其是现在,随着社会政治、经济、文化的迅速发展,方言也在迅速变化。如果不及时记录下来,许多极有价值的材料将会丢失,造成无可挽回的损失。 Chinese use a large population, vast geographical distribution, differences in dialect complex. From academic research, Chinese dialects can provide extremely valuable research materials. Dialects are constantly changing, and especially nowadays, with the rapid development of society and politics, economy and culture, dialects are also rapidly changing. If not recorded in time, many valuable materials will be lost, causing irreparable damage.