[rú bì shǐ zhǐ]   

如    臂    使    指    像胳膊支配手指那样。比喻指挥如意，没有牵制。 褒义>

比喻指挥如意，没有牵制。

As the arm directing the fingers -- command with ease as one wishes

如日方中    如法泡制    如醉初醒    如虎得翼    如醉如痴