Some of the lower effort Sino-Japanese war dramas that depict the Americans giving air support to China just have random white people talk vaguely military speak and then the subtitles are completely different. They can't get away with it much now because English proficiency in China is a lot more common, but it wouldn't be unusual 10 or 15 years ago to have the pilot say random shit like "10-4 florida alligators roast beef" the subtitles in Chinese are just like "We must coordinate the bombing runs along the mountain pass"

i'd love to see a chinese actor playing a stereotypical white american, that'd be amazing on so many levels. but the consequences are unpredictable. might tank a movie, might make it even more popular because of the lolz and giggles factor.