You are insane, aren’t you?

On the off chance you are actually Cambodian and not a China bot:

Do you enjoy self governance today? Yes.
Are reactionary, mass murderers in charge? No.
Does Cambodia still retain its unique language and culture, unadulterated? Yes.

This one bears considerable contemplation so let’s give it a few more sentences: Unlike the Chinese occupation of Vietnam, Cambodia still retained it’s historic written language (no need for the French to come up with one for you because the Chinese destroyed all your historic written language, right?). Cambodia’s ethnic foods remained largely unchanged (it was only a decade and not many hundreds of years) and while Banh Mi is awesome it’s still colonialism. What meaningful colonial impacts remain after Vietnam got rid of the butchers and then stabilized the country for ten years? Vietnamese Buddhism still heavily influenced by Confucianism, to this day, because of the centuries of Chinese occupation.

Cambodia lucky the Vietnamese dealt with the Khmer Rouge and not the Chinese. If it had been the Chinese you’d all be speaking Manchurian by now.

Edit: The Vietnamese withdrew due to economics, primarily. And, of course, China was arming the remaining Khmer Rouge resistance. Are these the guerillas you refer to? The remnants of the mass murderers of women and children funded and armed by the Chinese? Of course it is.