Okay Bros! So I was so curious that I just had to do more digging.
I made an international call to one of the contacts in Hong Kong. unfortunately, i didn't get a clear answer as his english was very limited.
however, from what I learned NL buddies exist in Mainland China, HK, Thailand, etc. As for the NL buddies in HK (i don't know about the rest) they are available for karaoke. I asked him about full service but he didn't understand ... so i said sexual service
and then he said if you wanna do that go to sex141. I asked him again if sexual service is provided after karaoke and from what i can tell, he said yes. He later hung up on me as I felt that the convo was a bit frustrating for him (I had to simplify my questions several times for him). So I couldn't get a clear answer but I think this gives me a better picture of what to expect.
I hope to try this on my next trip to hong kong and see what happens