First, based on different on different way to pronounce , people divided Chinese into two type: 1, Mandarin (major ) , 2, Cantonese.

The Chinese display tag for Mandarin is wrong: { "iso_639_1": "zh", "name": "中国", "english_name": "Mandarin" },

word "中国" means China ( the People Republic of China) , this is country name, not a language name.

usually "Mandarin" could be translated as "普通话" which means "regular (Chinese) language".

You should replace "中国" with "普通话".