I've studied a fair amount of Chinese ancient history. The "ant colony" remark is very clever, but wrong. In fact, if one chooses to regard the different ethnic and cultural areas of China this way, say for diplomacy sake, it could even be disastrously wrong.
As far as NK is concerned, as I stated earlier, the new economics of China has not totally westernized the place, that's true, but the stake that China now has in the global economy is bending their whole previous Maoist system out of shape, and it's on its way out. It will take some time. One "product" of this is that China wants no part of NK blowing things up, and wants no part of having to take the place over as an economic lead weight.
By the way, I have no love for China, consider their current economy an environmental disaster, and their general resource hoarding and exploitation a large deleterious impact not only on the US but many poor countries around the world [particularly in Africa]. I try to hold to a personal policy of not buying Chinese products.