【望梅止渴】〖wàng méi zh k〗[quench one's thirst by thinking of plums -- console oneself with false hopes; feed on fancies; look at plums to quench thirst -- imagined satisfaction; quench thirst by watching plums -- impossible]

望日曹军汗喉干，

梅林山后大又甜。

止足兵士飞步跑，

渴鹿奔泉涌向前。