1) Kuoyü 
lit 'Common Language', Mandarin Chinese based on the Beijing dialect. Read more about Mandarin
the form of Chinese, based on the Beijing dialect of Mandarin, adopted as the official national language of China.
The common spoken language; also called guoyu (national language). The official spoken language of China, used in its various forms by more than 70 percent of the population. The People's Republic government started promoting putonghua in 1956 for use in schools, the cultural arena, and daily life as a means of bringing about the standardization ...