Thanks for the post !
养老 is a becomming a huge huge issue in mainland China.
The 4-2-1 family structure will have tremendous (or even grave) impact on the Country.
Obviously there will no enough labors (qutitatively & qualitatively) to take care of the older generation.
Rely on the younger generation ? No way !
1. there won't be enough people in the younger generation;
2. as far as I know, many kids in the younger generation are weak, lazy, and way spoiled. Actually many even expect the older generation to take care of them !!
If Mainland China would collapse in the next 30 years, this would be the #1 factor.