This claim was made popular by being said in the movie The Social Network. It exactly says:

> Did you know there are more people with genius IQs living in China than there are people of any kind living in the United States?

Many movies take liberties with facts. This particular quote is not factually correct – or more precisely, it has to be qualified much more than it is here. While there may be more people with scores above 130 (using the IQ cutoffs of the WAIS-III test) living in China than there are people in the United States, there’s not enough data available to claim that about people with “genius IQs,” defined as those exceeding
The claim is indeed true but it is a bit overly dramatic since just having a high IQ score doesn't make you a genius in real life. The number is based on an estimate provided by a psychologist, and it is often used to highlight the difference between IQ scores distribution in the US and other Asian countries.

The statement refers to people with IQ scores above 130, considered the threshold for "genius" or "very superior" intelligence according