What does it mean to hang low?

I know this. Literally means the one that hangs down. Actually, it's a man. It was also joked by an American. We smoke together. There is a brand of cigarettes called Yellow Crane Tower, which sounds very similar. So when he gives me a cigarette, he always says, Do you want to try the one I hung low? Then I pointed to a cigarette and replied, I know you like China cigarettes, which is a very famous brand in China. You should understand, right?