Mandarin language
 Mandarin is  one of five major regional languages of China. It spreads wider than any other regional language, from the whole northern part of China down to Yunnan Province in the southwest corner of China. In that big area there are many regional differences in vocabulary, so somebody who moves from Beijing to Yunnan could not understand people there who were speaking their own language, Yunnan hua. The problem is bigger than for a person in Great Britain or the United States to go to Australia. Therefore, starting in the 1920s, the Chinese government set up a national language based on the most widely understood words and pronunciations.