Fu-Rin-Ka-Zan is a common name for the phrase of 'as fast as the wind, as quiet as the forest, as daring as fire, and as immovable as the mountain,' written on the hatasashi-mono (battle flags) of Shingen TAKEDA, a daimyo (Japanese territorial lord) in the Sengoku period in the Kai Province (Yamanashi Prefecture).
風林火山（ふうりんかざん）は、甲斐国（山梨県）の戦国大名・武田信玄の旗指物（軍旗）に記された「疾如風、徐如林、侵掠如火、不動如山/疾（はや）きこと風の如く、徐（しず）かなること林の如く、侵(おか)し掠(かす)めること火の如く、動かざること山の如し」の通称。