Regional nationalism in relatively homogeneous Asian countries? (people, culture, move)

[usuario]

Certain countries in Asia have a dominant ethnic group. However even within the single ethnic group, there are often significant differences in language, traditions, and culture that, were this Europe in the 18th and 19th century, would have been enough to divide the ethnic group and cause ethnic conflict. But it seems like (from my ignorant Western point of view) everybody seems to get a long even if their cultures have diverged a lot in the past few hundred years. Is this true, or are there regionalist movements in relatively homogeneous Asian countries that seek autonomy / recognition or (gasp!) independence?

I am NOT talking about ethnic groups that never shared a common history, like the Ainu in Japan, aboriginals in Taiwan, Hmong in Vietnam, or Uyghurs in China. I'm talking about people who view themselves as the same ethnicity, but might harbor a strong regional nationalistic identity which can be sharpened when they feel like there's a dominant province/state/region that looks down on them, for example. They often have a local "dialect", which is viewed by linguists as a separate language due to lack of intelligibility with the national language. They have regional cuisine, dance, music, that though it is distinct from the most famous national kinds, is similar enough to be considered the same culture.

For those who are familiar with Europe, think of groups like the Catalans in Spain, Bavarians in Germany, Scottish in the UK, and Cossacks in Russia, which have common Western Romance, Germanic, British, and East Slavic history but have diverged over the years. Groups like the Ainu, Hmong, and Uyghurs would be more similar to groups like the Basque in Spain, Roma in Hungary, which have a completely independent history.