Are you a 40 year old boomer who's stuck teaching in China who can't even speak Chinese or something? That's the only way I could see this not being sad as hell, I seriously doubt you could even pull from those chinese table clubs even if you went lol. If you've really lived in China for that long you should know that the entire country runs on Guanxi, having more friends and knowing more people will only help you, and if your chinese is even half decent there's lots of chinese dudes who are good bros (imo zoomer chinese girls tend to be kind hit on miss on that end). If you take care of them they will take care of you, or maybe those chinese dudes think you're a loser and don't really want to interact with you more than necessary.
Anyhow I had more more fun and crazy experiences having the right guy friends compared to only trying to find girls to fuck, food for thought.