The number in China will be less important in the coming years, than the demographic of the population. It is going to be quite bad for them, unless something is done to support the elderly.

Maybe we could see the beginning of Soylent Green. I think the Chinese have the means to do such a thing plus the palate for weird stuff. One can only wonder if they haven't started already.

The incentives for change should be something that drives human greed towards the right direction. It seems only greed matters in the short term. Anything trying to get some changes done should appeal to that.