And One Thing Led to Another

So with this complicated plot it naturally meant one thing led to another, namely our main MCs going to bed. I know some people are upset over not seeing more of the deed itself, and personally I wish to see more too, but for shounen-ai which sometimes doesn't even have characters doing the deed just emoting and possibly an odd kiss, I'm not going to complain. But I wonder did those 2 cops disappear because they were on to something or because they were dirty? Somebody leaked Tang's real ID to Bai and who better than a cop.