Japan has an ideology. They are a proud people, and they have an extremely nationalistic population, especially with respect to their Empire until WW2. They still attempt historical revisionism on WW2. Vox and Chris Harris made a good video on this, which I would suggest you watch using a VPN.
South Korea on the other hand has none, having been taken over by Western decadence. They ceased to exist as a collective civilization the day North and South Korea were split on arbitrary reasons, and when SoKo became rich.
China on the other hand, is even worse, AFAIK. The Chinese had a pretty great culture, which Mao absolutely destroyed in the Cultural Revolution. Your past, your traditions were all wiped out and replaced by the Little Red Book. The CCP is attempting to revive the culture, but cultures are not artificial that can be created. They develop over time. If China's economic growth stops, and the CCP becomes incapable of handling their SCS claims, will the people of China stand with the CCP? What will happen to the average Chinese citizen? If a culture is destroyed, the feeling of national unity or a glorious past to rely on ceases to exist. The best example you should check out is Western Europe and the US, where immigrants and other cultures are all present, resulting in people who were born and grew up there their entire lives owing their loyalty to another country, while the host culture is getting wiped out and replaced by wokeism. If they have no culture, what is left for the West to defend? The question will arise in the average man, as to what are we fighting for? During the Cold War, they had an enemy in the Soviets and were patriotic, but 30 years of complacence is destroying them.
I believe that this may not happen in China, primarily due to your economic growth, and your belief of China vs the World(most of it), but be wary that a hundred years in the future, when the West is defeated, what will the average Chinese citizen fight for?