红皮书 hóngpíshū red book Origin Definitions Defs Strokes Stroke Words Sentences Sents hóngpíshū red book 红 紅 hóng adjective red the color of blood; having a reddish color皮 pí cover; wrapper an outer covering, wrapper, or protective case书 書 shū noun document a formal document, certificate, or written statementhóngpíshū Red Data Book 红 紅 hóng adjective red the color of blood; having a reddish color皮 pí cover; wrapper an outer covering, wrapper, or protective case书 書 shū noun book book; volumes or works of text or drawings bound together