数伏 Traditional form: 數伏 Pinyin (reading): shǔfú Definitions: to mark the start of the hottest period of the year, known as 三伏天 (sānfútiān) Characters: 数 - count, number, several 伏 - to crouch, to crawl, to lie hidden, to conceal Traditional characters: 數 - count, number, several 伏 - to crouch, to crawl, to lie hidden, to conceal