长三角 Traditional form: 長三角 Pinyin (reading): Cháng Sānjiǎo Definitions: Yangtze River Delta (abbr. for 長江三角洲/长江三角洲 ( Chángjiāng Sānjiǎozhōu)) Characters: 长 - long, lasting; to excel in 三 - three 角 - angle, corner; horn, horn-shaped Traditional characters: 長 - long, lasting; to excel in 三 - three 角 - angle, corner; horn, horn-shaped