万事俱备，只欠东风

Explanation: Everything is ready, except east wind is not blowing, you can not fire. What metaphors are ready, only a thin last important condition for the. 　　Usage: Complex sentence; for clause; means waiting for an opportunity 　　Source: Ming Luo, "Three Kingdoms" forty-ninth hole Mingsuo back to pen and paper, Pingtui so, close the book _set_ by leaders said Yupo Tso, to use the Fire Attack; everything is ready, only the wind. " 　　Examples: We are now ~, as long as the one machine, we can immediately installed.