【事倍功半】〖shì bèi gng bàn〗[get half the results with double [twice] the effort; labour hard to little avail; mountain in labour; The mountains have brought forth a mouse]

事与愿违改私制，

倍偿英烈遗愿逆。

功参造化建公有，

半道赭衣贪官缉。

工作费力大，收效小。Work fee power big, collect effect small.同：得不偿失、舍本求末。反：事半功倍。