密云不雨

Explanation: Sky does not rain clouds. Analogy of things are brewing, for a moment, there is no attack. 　　Usage: The main predicate; as predicate; metaphor things are in the pipeline 　　Source: "Book Xiaoxu": "Miyunbuyu, self-western suburbs." 　　Examples: ~, Yet to him; self-western suburbs, not the line is also applied. ("Two-way Yichuan a book")