China has a vast land and a large population. Eventhough the Chinese lauguage is spoken all over the country, people in different areas speak in different ways, which are called dialects. Generally called local languages, dialects are branches of the Chinese language in different regions, and are only used in certain areas. Dialects of the Chinese language are very complicated. They differ from each other in three aspects: pronunciation, vocabulary and grammar. And the difference in pronuniciation is the most outstanding. Over 2,000 years ago, Chinese people realized that a common language should be used in social activities. Compared with dialects, mandarin can be understood by all people. It is beneficial to information transmission and cultural exchange between ethnic groups and people in different places.
中国土地广博，人口众多。尽管全国都讲汉语，但是不同地区的人说汉语的方式不同，即方言。方言一般被称为地方话，是汉语在不同地方的分支，只在特定地区使用。汉语方言十分复杂。他们有以下三方面不同：发音、词汇和语法。发音的区别最为显著。2000多年前，中国人发现社交时应该使用统一的语言。和方言相比，普通话能被所有人理解。普通话有利于不同种族、地区人民之间的信息传递和文化交流。
