I was visiting Hong Kong for business and saw people fishing the dirty water near the convention center. I asked one of the fishermen what they were catching, he didn't speak english but handed me his rig and showed me what to do. He had a weighted treble hook at the end of the line and some bait about 6" above that, some kind of cheese that was hard like clay. You drop the line in the water and when you feel something nibbling on the bait you lift up quickly and snag the fish with the treble hook. They were taking these home to eat. Later I saw a crowd gather around one of the fishermen to check out his whopper. It was 3" long.
