Looking at the models used in this vs. the models used in the clearly Chinese-made CGI renders, the difference between what porn aimed at Chinese audiences see as attractive female features and what porn aimed at Western audiences see as attractive features in ostensibly Chinese characters is pretty noticeable. Assuming, of course, that the author didn't deliberately choose a model he found unattractive.
The two girls look very much like women from the southern part of China, as for the tall girl(in dirty white clothes), one of my friends from Fujian look exactly like her, which gives me a laugh every time I see this story.