Especially since Chinese couples really wanted boys, so they aborted a lot of little baby girls. This has led to a rather large sex discrepancy in their population. Which per Mark Steyn, may lead to China being the first gay superpower since Sparta.
In the running for Understatement of the Year! (and not a peep from the world's "womens rights" groups).
Lots of single-child families, over several generations. That means no siblings, no aunts and uncles, no cousins, etc. Only one adult child to care for elder parents with no support from aunts or uncles. Worse, most are boys and have no sister siblings from which to learn about relationships between boys and girls. When and if these boys marry, the wife has no sister-in-law to help her. China is screwed up.
Fabulous!!