China is now encouraging higher birth rates after many years of the one-child policy. But the general consensus is that it hasn’t been very successful, even with the CCP’s authoritarian power. The causes are multi-dimensional and difficult to solve: high living costs, changing social values, and younger generations who no longer want to marry young—or marry at all.
Even North Korea has to encourage women to give birth[0]; the Kim dynasty can’t simply issue an order and shoot anyone who disobeys. It simply doesn’t work that way.
The CCP has not really exercised its authoritarian power to raise birth rates yet because it's not a big enough problem and might never become one.
The birth rate fell in North Korea because people are genuinely starving, whereas in other places it's mostly because of birth control. These are not comparable situations.
Even North Korea has to encourage women to give birth[0]; the Kim dynasty can’t simply issue an order and shoot anyone who disobeys. It simply doesn’t work that way.
[0]: https://www.voanews.com/a/north-korea-s-kim-calls-for-women-...