It’s been ended officially but due to social pressures to “put all your resources into one child” as the parents were accustomed to, having just one child is still a strong cultural factor. The CCP can’t just flip a switch and suddenly the whole culture aligns with having many children.
In fact, China fertility rare went down no lower than 1.5 during the one-child policy. In 2024 however, it was 1.03 child/woman, and last year it sank to less than 1 child per woman.
But of course there are huge disparities between cities and rural areas.