如火燎原

Explanation: Burn: burn; original: fields. Fire burning in the wilderness. Great momentum analogy difficult to inhibition. 　　Source: "Book on Pangeng" If fire burn in the original, not to near. " 　　Examples: Maturity can not be "exterminated", but ~, some of them do border province of, ranging from demotion, cut staff, while in prison have beheaded. (Yao Xueyin "Rereading" thirty-sixth chapter II)