how can we reverse Korean national sympathies with a post 1600 PoD where the imJin war of the 1590s still happened like OTL?
Maybe have the Japanese help aganist a Qing invasion and succeed?how can we reverse Korean national sympathies with a post 1600 PoD where the imJin war of the 1590s still happened like OTL?
Have both being victims of an aggressive imperialist China.how can we reverse Korean national sympathies with a post 1600 PoD where the imJin war of the 1590s still happened like OTL?
The Qing did invade the Joseon twice in the 1600s. But mind, the Japanese did launch their ill fated invasion in the 1590s so there wasn't any chance the Joseon would trust them at all. Plus, there was a great deal of xenophobia and Korean exceptionalism (the Joseon saw itself far above the Manchu and Japanese 'barbarians' even despite their military failings) so cooperating was, to the Joseon officials, an act of lowering themselves (they turned down Manchu help when Nurhaci offered during the Imjin War, despite being chased all the way to Pyongyang within a few months, because they didn't trust or respect the Manchu).Maybe have the Japanese help aganist a Qing invasion and succeed?
Not really ever. The Qing invaded the Joseon in order to subjugate them and prevent a two-front war with both the Ming and Joseon. But they never intended on conquest, just vassalage. China was the real prize.How close did things ever come to the Qing posing an existential threat to Korea?
The Qing did invade the Joseon twice in the 1600s. But mind, the Japanese did launch their ill fated invasion in the 1590s so there wasn't any chance the Joseon would trust them at all. Plus, there was a great deal of xenophobia and Korean exceptionalism (the Joseon saw itself far above the Manchu and Japanese 'barbarians' even despite their military failings) so cooperating was, to the Joseon officials, an act of lowering themselves (they turned down Manchu help when Nurhaci offered during the Imjin War, despite being chased all the way to Pyongyang within a few months, because they didn't trust or respect the Manchu).
Not really ever. The Qing invaded the Joseon in order to subjugate them and prevent a two-front war with both the Ming and Joseon. But they never intended on conquest, just vassalage. China was the real prize.
The wars weren't even inevitable either. King Gwanghaegun did a fine good at keeping as neutral as possible. The Manchu wouldn't have even invaded if Gwanghaegun wasn't overthrown and Injo wasn't such an ass. Even after soundly defeating the Joseon, all they took was resources to fuel their armies and Injo's submission to the Qing emperor. After that, the Qing just let the Joseon exist as a tributary. They were never an existential threat to Korea.
Honestly though, Japanese-Korean relations didn't have to soar until the Japanese tried to impose themselves on the Koreans after the Meiji Restoration. Joseon-Japanese trade restarted only 2 decades after the Imjin War (helped by the fact that the Tokugawa weren't part of the invasion) and there were pro-Japanese reformers (like with the Gapsin Coup) during the late 19th century. If the Japanese weren't quite as exploitative and racially minded during their time colonizing Korea, relations would probably be way nicer. Think Taiwan-Japan nice (Taiwan's the only East Asian nation that doesn't have a grudge against Japan for their colonial behavior).
Say the Japanese are a bit more humanitarian or push a 'Coprosperity Sphere' for real instead of using it as propaganda. Have the Koreans benefit from the influx of technology and industry rather than focus on exploiting it for the home islands' sake. Avoid sexual slavery and focus on equality (or at least don't take away the language and suppress the culture of the peninsula) and reform to benefit the oppressed lower classes.
As for hating the Chinese, that's easy because that happened OTL. There were anti-Chinese riots in Korea during the 1930s for minor incidents, inflamed and exploited by the Japanese. There's plenty of border disputes to be had over the northern border too, with Jiandao (Gando) having a sizeable Korean minority and previous Korean kingdoms holding lands in southern Manchuria. It's easy to breed Sinophobia in Korea, with the right flashpoints and less dislike of Japan.
So yeah, you don't even need a 1600s POD for this. It can be as late as the 1890s and still work out.