伏流 Traditional form: 伏流 Pinyin (reading): fúliú Definitions: hidden stream ground stream Characters: 伏 - to crouch, to crawl, to lie hidden, to conceal 流 - to flow, to drift, to circulate; class Traditional characters: 伏 - to crouch, to crawl, to lie hidden, to conceal 流 - to flow, to drift, to circulate; class