Thanks to MH for the guidance before I went.
I was travelling for some time in the Guangzhou area on business. The trouble was, I was hosted nearly all the time and was staying in several locations so could not plan well in advance.
One night after a formal dinner, the Chinese host was driving back to the hotel and suggested we stop for a massage. His chosen place was a 5 star looking place - like a posh hotel. 420 RMB for 90 min (£50 ish). Like most of my time in China, I have no idea where the fuck I was exactly. My host helped me with the customs. Changing rooms with private lockers and a man to help me strip. Hung my clothes, folded my pants. Then a careful shower. Then 10 min in steam room. Then the man helps put on pyjamas. Then relax for 15 in in a comfy lounge with tea. Then wander upstairs to posh massage rooms, each with its own bathroom with western toilets. I'm thinking this is like getting a massage in a Sheraton - at least I will get the aches out of my back. The massage girl was nice looking and wearing a sailor suit with a very short skirt - pretty blatantly sexy outfit. Hmmm. No English.
After a great 45 min massage, she sticks a paper napkin to the window in the door. Turns me over, strips me off, takes off her top. Nice tits. Blows in my ear, sucks my nipples, I can touch her tits but not kiss them (or her). She gets me hard, nice oily hand job, big mess which she cleans up. Leaves the room for a minute. Then back inside and 30 min more massage. More a happy middle than a happy ending. Meet up with my host, have another shower, back to lounge for more tea. So we are in the place for more than 2 hours. Liked it.
I repeated later in the week (on my own) in another 4 star looking place behind my hotel in a different town. This was 360 RMB. Same routine - I even had Chinese tea on my own. Loos down the hall and only Chinese toilets. This girl was a bit older (35?) and stronger so the massage was great. Happy middle the same, but she kept her shirt on. Still, I played with her big tits. Slippery hand job felt great - I made her work for it. Then 30-40 min more massage as before. There was no discussion of tip. I conclude the whole point of these places is this service, and since tipping is not a big thing in China, a tip is not required for the HE. I am sure she wouldn't turn it down but it seemed like tipping a prossie - no need.