China is in serious trouble if it doesn't fix its population decline problem. Just like population growth, population decline could get exponential. Without population there is no country.
I think Chinese government will slowly raise its desperation to fix the population problem with more and more harsh measures. First it will be enticement but slowly it will become mandatory to have children.
We can say current China's huge population size is the legacy of poverty. You can slice and dice in so many different ways, but it is what it is and what it comes down to.
So as China industrialize on massive scale, a lot of things change, regardless of personal like or dislike. There definitely is a correlation between industrialization and birth rate, even if there is any actual causation or not is up for debate. As China industrialize even more, trying to keep an old legacy is mostly best wishes, as the original natural ingredients for high fertility rates are not there anymore. So relatively poor and under-developed rural areas are naturally one of the prime targets to find some possible solutions. That's why China has plans for becoming an agri superpower, yes an agricultural superpower and attendant rural revitalization. Yes it's hidden in plain sight in the countryside, not in the big cities where women have degrees and cats. Migrants will go back to countryside if things are easier. Transportation and shelter are the most difficult hurdles for poor urban folks to move up their social mobility, hence the build up of massive rail system, public transit systems, now the bursting of housing bubbles. You can't do anything else if you're spending 4 hours of your time daily commuting between where you live and where you work. A mother of 2 doesn't have time to take her kids to anything of any interests on a regular basis if her work is taking 2 hour commute. Will it solve all ailments, no. But it helps. So when a guy comes in and say "hey what's the ROI for that?" you can pretty be sure that guy is so clueless and convoluted he needs to touch grass and be sent immediately to re-education camp long term. It's a new problem for China as she industrialize and gets richer each year. No other industrialized , or post industrialized countries solve that native population's fertility problem except immigration. China is trying to find the ingredients for sure, not the process itself yet. And once they find the necessary ingredients for industrial age, it would be China that solves the problem that no other has done, like any other things. And then scale it up, but it's still in the very early stage of finding out what are the missing ingredients.
If you are concerned about declining births, you can ask around in your free time anyone in those cohorts hey what's the hold up, and you can come up with a few missing ingredients yourself. Just common sense. CPC doesn't have a shiny ball that they can rub and solve all of it at one go, they put on the socks the same way we do, one at a time. Nothing special. Just common sense and breaking it down to simple pieces. Hope it helps.