In my experience alt right folks are pretty anti China, to the point where that is often the reason they oppose the Ukraine war, as it is dividing the attention of the Christian west from the rising, menacing Tigers that threaten white society.

Hexbears are often skeptical of Adrian Zenz who is usually the source of claims about China. Most that I've seen acknowledge that there are camps (China openly says it is running programs to deradicalize separatists and fundamentalists in the region), but disagree that they are as bad as western media depicts them, and would probably argue that western nations are concern trolling about the issue regardless because it is easy to question whether American foreign policy is motivated by concern for Muslims. Genuinely curious, who is an alt-right guy who doesn't think there are camps in Xinjiang? I've never encountered a pro-Chinese reactionary.

As to Korea I thought MAGA types just memed about Kim Jong Un because Trump sort of got along with him. Hexbears think that the Korean War was bad and that Korea is acting predictably given that a nuclear power is constantly threatening them with annihilation. There are a variety of positions in Hexbear on the DPRK though, and I can't really account for all of them, but I think they arise out of a genuine anti-imperial and anti-war sentiment, and a healthy doze of skepticism of western narratives of a state enemy. I don't think you could say that for the alt right.