冷水浇背

Explanation: Cold water poured down from the back. Analogy suffered sudden unexpected shock or stimulate, thought startled or you hope to disillusionment. Also as "cold toppings." 　　Source: Qing Wu Jian "Strange two decades," the sixty-fifth back to ruby ​​after listening to the total, such as cold water back in general, lips are blue, and white face, not say anything. " 　　Examples: See entry from Chen and Xu started back, ~, a blow when it lost its base, desolate casting haze of confusion I do not know is engaged, and frightened Juxi, and resentment, and Ai, and doubt and fear, and Tung Fu Xi is not actually associated bed sleep soundly. ★ Liang "Thirty readme"