As it talking about Government, here is also a big problem in China: Taiwan problem
For some history reason, Taiwan and Chinese mainland still not get unified in one government.(It is a long history and it is getting more complex today, I can't put all of these here.) But both of Taiwan government and China mainland government agree that Taiwan is a part of China.(In official documents, but some Taiwan people just think Taiwan is a country)
Also, all Chinese and Chinese mainland government CAN NOT ACCEPT someone says "Taiwan is a country" or do such action.
And in nowadays Ubuntu-touch language&country setting, word "Taiwanese" is not acceptable by Chinese mainland government and Chinese people.In country selection, word "Taiwan" is not acceptable(It should be "Chinese Taiwan" or change word "country" into "region")