Just arrived HK and this is my first time checking out this forum. Can i ask any law expert here on what is considered a crime in terms of  having sex with WG?

Is it no issue if we are only contacting the admin but no transaction involved?

https://en.wikipedia.org/wiki/Prostitution_in_Hong_Kong

I think the above is pretty accurate -- and detailed.

Bottom line. It is not illegal to buy / sell sex...

No minors...i think that is pretty clear everywhere

Prostitution and pornography are technically illegal in China but they turn a blind eye to it as long as you don't draw too much public attention to yourself. Also the government would do a horse and pony show for the public or whatever other hidden agenda and do a random police raid from time to time. Unless the government out to get you than normally you are safe with nothing to worry about but if they are coming for your ass it doesn't really matter if they stick prostitution as your crime or not because they have countless of other bullshit crime they can to pin on you.

The reason i am asking is because i was providing my hotel info by taking photo of the room number and last name because the admin requires those info before giving the ladies photo to me.

When the photos are given, i apologized saying that i was not interested in any of those ladies in the photo. Then i call it a day

And then a few hours later i received call that there was police officer looking for me and planning to go up in 10mins. During this time i can only relate to above activity as no one knows where i stay (maybe the admin was not happy and reported me to police or the amdin was a police undercover) or this was just a prank

10 mins later, i received call saying that the police was actually referring to incorrect guest. Hence no issue

Nevertheless, it's good to know that everything is fine even if i was caught naked with girl in room as long as the girl is not a minor

I should be giving clear context, the call i received was from hotel front desk to my hotel desk phone.

I don't have all the details, but here's my best guess. They advertise and target non-locals who're not familiar with HK sex industry (e.g., info on this site/well know agent TGs such as exotic, honeygals, RG MIX, etc etc). And when you refuse, they try to make a scene and embarrass you, with the hope that you'd take the girl, no matter how ugly she is. Many years ago, I had this hotel outcall; the girl arrived at the front desk and instead of coming straight up, she made the hotel staff call me to go down. This was their attempt to make me feel embarrassed. But even after she came to my room, I insisted she's not the advertised girl (she's like a Philipino and there was a hot white blonde in the ad), and paid her a taxi fee to let her go.

In general do NOT give them your name. If the elevator needs a card, just go down and meet her when she arrives. Or there are several hotels whose elevators require no card (e.g. the "S" hotel near the Peninsula, with a famous steak house on 4/F.