初伏 Traditional form: 初伏 Pinyin (reading): chūfú Definitions: the first of the three annual periods of hot weather (三伏 (sānfú)), which typically begins in mid-July and lasts 10 days Characters: 初 - beginning, initial, primary 伏 - to crouch, to crawl, to lie hidden, to conceal Traditional characters: 初 - beginning, initial, primary 伏 - to crouch, to crawl, to lie hidden, to conceal