Of course the Chinese sugar daddy style is ultimately unprofessional, but it slips under the radar. Hence it is a more professionally committed offence than the average stereotypical horny young laowai case, where they seem to get some 18 year old girl wasted, take her virginity, break her heart, getting all the students spreading rumours, disgracing her in front of her friends, maybe even making her parents want to disown her, causing trouble all over the place like a bull in a China shop.