Later, at the end of the Warring States Period (in China), it was incorporated with Gogyo shiso (Five Elements Theory), and it spread across the East Asian cultural sphere as Inyo [Onmyo] gogyo shiso (Yin-Yang Wu-Hsing Idea).
後、戦国時代(中国)末期に五行思想と一体となった陰陽五行思想として東アジア文化圏に広まった。