mai - It is relatively easy to avoid ladies of the night if you know what to look for but in some, especially small or locally-run hotels, it can become a nuisance as the room telephone rings at 11 pm to see if you would like a “massage.” Here is some information on what to watch out for so you don't wind up in a sticky. aug. - It's mostly used to try and find people to hook up with. China Channel has been reliably informed through our 'on the ground contacts' that within Vietnam WeChat is widely known as being the number 1 app for locating prostitutes using the 'look around' feature. For legitimate chat. aug. - Tinder said it had a bunch of users in North Korea and China during its infamous tweetstorm this week. But these are the apps people really use in China.