蓝皮书 Traditional form: 藍皮書 Pinyin (reading): lánpíshū Definitions: an official report (e.g. governmental) Characters: 蓝 - blue; indigo plant; surname 皮 - skin, hide, fur, feathers 书 - book, letter, document; writing Traditional characters: 藍 - blue; indigo plant; surname 皮 - skin, hide, fur, feathers 書 - book, letter, document; writing