US politicians not able to engage Spanish as a second language, only want to make it illegal in any governmental authority. China doesn't have that luxury. I think most business in China is conducted in Mandarin, at least when it comes to international business.
Around 600,000 Nong Zhuang (click here) people live in southeastern Yunnan Province, primarily in the counties of Guangnan, Yanshan, Wenshan, Maguan, Malipo, and Xichou, as well as a smaller population in the Vietnamese provinces of Lao Cai and Ha Giang.
Most members of this ethnic group continue to speak a unique Central Taic language, though some young people who group up in or near cities only speak Chinese. Many Nong Zhuang people also have a functional ability in standard Mandarin or the local dialect of Chinese, though older people and those who have not left the villages often have more limited Chinese comprehension and some Nong are completely monolingual.
The Nong Zhuang, who call themselves Pu Nong or Pu Day ("Pu" meaning "people" or "tribe"), are known to surrounding ethnic groups as "Nongzu" or "Longzu" (侬族) and were classified into the official Zhuang nationality in 1958....
