ㄐㄧㄠˋjiàoㄒㄩㄝˊxuéㄒㄧㄤxiāngㄓㄤˇzhǎng

  1. 互相增長通過教授學習不但使學生得到進步而且教師本身水準也可提高禮記·學記》:是故學然後知不足然後不足然後自反然後自強教學相長。」

when you teach someone, both teacher and student will benefit