Qua businessman, I don't know any. Nor officials. I may have once been visited a KTV. I have seen the inside of a bar or two. So I have pretty much no direct evidence of anything. But I think, based on everyday circumstantial stuff, the shoe fits. The attitudes to women, the way everyone lives. Casual vice with the goal of bonding or blackmail... it makes sense. In particular, the narrative inside the article (if not the particular details) makes sense of how joyless eating and drinking seem to have become in the culture. Even sex too. I mean, there're probably people enjoying these things somewhere, but who hasn't felt banquet pressure before, and why is it so widespread?