In my city, because gambling is prohibited by the government, there are several underground gambling places operating, ranging from luxurious buildings to large-scale cockfighting gambling places, which have been operating for a long time without ever being raided by the government. Maybe many people wonder why the government doesn't raid these places even though many people already know about these places, because the places are guarded by military police and backed by officials equivalent to senators. And if you enter this place you will be asked who you got in from.. so this is really a safe place to do illegal gambling. I don't really know what the conditions are like inside these places, but from what I heard that there you can not only gamble, but also get women and drugs. So these places are indeed quite dangerous, especially for ordinary people.