[miàn bì gōng shēn]   

面    壁    功    深    面壁：佛家语，指面对墙壁默坐静修。和尚面壁静修，道行很深。比喻某人在某一方面造诣很深。

面壁功深，面壁：佛家语，指面对墙壁默坐静修。和尚面壁静修，道行很深。比喻某人在某一方面造诣很深。

Said of a monk who is profound in meditation and self-examination

面朋口友    面不改色    面面俱到    面面相覩    面红耳赤