【水到渠成】〖shu dào qú chéng〗[When water flows, a channel is formed; A canal is formed when water comes -- sth. achieved without effort; What happens is without extra effort; When conditions are ripe, success will come]

水流进田 兰桂芳，

到来自然 情义长。

渠道冲出 欢乐泉，

成熟条件 幸福享。

水流到的地方自然形成一条水道。比喻条件成熟，事情自然会成功。Water flows naturally forms a water course. Metaphor When conditions mature, things will naturally succeed.同：顺理成章、瓜熟蒂落。反：功败垂成。谜：勾、巨木。