It isn’t that. The Han are rather, well racist.
The young woman in the picture isn’t Han Chinese.
Now beggars can’t be choosers, so this might work, but it isn’t the way to bet.
There are over a billion Han Chinese, and only about 10 million Uyghur, which means it would just take 1% of the Han being willing to marry a Uyghur to completely assimilate their female population.
The the shortage of female Han women is going to produce some horny Han men.