[oefrha]

That only started in 1979, with limited enforcement throughout, and gp’s talking about families with only one child for generations (probably >=3 in the context but at least 2) circa 2000 which is only one generation removed, so that’s only a small factor. Especially considering China’s population doubled from 1949 to 1979.

I also discussed the indirect/cultural factor where one should learn about this. There are two complementary factors here: if the young woman was rural there was practically no way she never encountered a family with multiple children; if she was urban it was more likely she was educated and thus should at least learn about it from school and/or through literature.