直立人 Traditional form: 直立人 Pinyin (reading): zhílìrén Definitions: Homo erectus Characters: 直 - straight, vertical; candid, direct, frank 立 - to stand; to establish, to set up 人 - man, person; people Traditional characters: 直 - straight, vertical; candid, direct, frank 立 - to stand; to establish, to set up 人 - man, person; people