It is fairly much accepted that whiter is more beautiful for Asian women.
Which is why whitening creams and even injections are extremely popular and fake tan and solariums are not.
Chinese young women are more “slim fit”, Thais not so much and are quite lazy when it comes to sporting activities as reflected in Olympic results and other international sports.
I am not saying Thai women are ugly, but Chinese women are more attractive and as such the Chinese men are not really interested in paying short, darker and often heavily tattooed single mothers for sex in Pattaya as much as we Brits are.