Pretty sure the above is how Eileen got her dual citizenship actually. Her Chinese citizen mom was in the US on a temporary visa and had her through artificial insemination.

The exception with Eileen was that the consulate kept renewing her Chinese Travel Document past her 18th birthday, whereas most other people were forced to choose between getting a Chinese passport/losing their US passport, or keeping their US passport and having to get a Chinese visa. But like I said, Chinese consulates are now renewing Chinese Travel Documents for everyone past their 18th birthday, so being a Wannabe Eileen is pretty easy assuming that you were eligible for a Chinese Travel Document at birth.