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Is it possible for China to decide to annex Japan and Korea? Rather than having then as tributaries having them as provinces.

Perhaps China finds out Ryukyu is actually Japanese not independent like they were being lied about

Maybe the Qing get annoyed at Korea's use of Ming years and other subversive things.

What would the reaction of Europe be if this was occurring (probably as part of the great campaigns of the Qianlong Emperor)?

If China can annex Korea but not Japan, what's insurmountable? Would they lose even Taiwan?
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