风潇雨晦

Explanation: Describe the wind pelting rain suddenly the sky darkened. Also compared the situation dangerous. 　　Usage: Joint type; as predicate, attributive; metaphor dangerous situation 　　Source: "Book of Songs Zheng Feng storm": "drizzly rain, cock rubber adhesive, both see the gentleman, Yun Hu does not heal. Wind and rain as night, crowing incessantly, both see the gentleman, Yunhu do not like."