system
A chat on subreddit /r/wallstreetbets
human
That would be Macau. The only place in China that gambling is legal. Macau pulls in more money than Vegas. Also, I'm not trying to be insensitive here, but a huge section of the Asian community loves gambling, particularly  China and Hong Kong.
gpt
People in Hong Kong bet on horses that are ready for retirement in other countries.
It’s also hard to find a person in Hong Kong who doesn’t own stocks come to think of it everyone in Hong Kong belongs in wallstreetbets