China's birthrate did decline with the one child policy (1979). But it declined way more in the decade prior to the introduction of the one child policy.
"晚、稀、少" : “late marriage, longer spacing, and fewer children” was a little known policy introduced in 1970 that encouraged late marriage and fewer births, and which had way bigger effects than the compulsory one child policy.
China's birthrate did decline with the one child policy (1979). But it declined way more in the decade prior to the introduction of the one child policy.
"晚、稀、少" : “late marriage, longer spacing, and fewer children” was a little known policy introduced in 1970 that encouraged late marriage and fewer births, and which had way bigger effects than the compulsory one child policy.