I understood it. I don't believe there is no Chinese SP in the city the size of Aberdeen. Especially considering the kind of town Aberdeen is. Possibly not now during lockdown of course but normally.
Where there is a Chinese community, there is a Chinese prostitute, many of them in fact.
Thai people do not lie and say they are Chinese because they don't like Chinese, and the Chinese look down on Thai so they don't pretend they are Thai. Possible exception is the Trans world where Thais have a certain glamorous reputation. Skin colour wise, southern Chinese and Thais are indistinguishable. But face features are sometime obviously different.