Even if they mandated non-stop births from all capable females by law, it still wouldn't catch up to declines.

https://www.piie.com/research/piie-charts/2024/chinas-popula...

Massive immigration (on a scale never seen in human history) would be required. I don't see that happening with one of the most xenophobic cultures on Earth.

This isn't a problem confined to China, they just have the worst numbers. The entire "first world" is facing declines of varying degrees.

This coupled with climate change is why immigration policy is probably the single most important thing for most countries right now.