黑砖窑 Traditional form: 黑磚窯 Pinyin (reading): hēizhuānyáo Definitions: lit. black brick kiln factories that acquired notoriety in 2007 for slave labor Characters: 黑 - black; dark; evil, sinister 砖 - tile, brick 窑 - kiln, oven; pit, coal mine Traditional characters: 黑 - black; dark; evil, sinister 磚 - tile, brick 窯 - kiln, oven; pit, coal mine