People in China aren't starving anymore. The great leap forward was around 60 years ago. It is not like they are N Korea or something. A person being fat there doesn't mean that others had to starve, that would imply either a massive food shortage or a "fixed pie" economy with a finite amount of possible wealth, neither is true in China and it hasn't been that way for decades. No one there is starving to death. That being said, fatness is still seen as a sign or western-style decadence and poor self control, so it is rightly looked down on heavily there.