What do you mean, soaked to the skin?

Short for quicksand mahjong. Liuma is actually a heavy square acrylic pendant, named after it looks like mahjong, which is actually the abbreviation of quicksand mahjong; But it was named quicksand because this acrylic pendant has a sandwich inside, and there is something like a flash in the sandwich. When you shake it back and forth in your hand, the flash will flow around and look very beautiful.