画 ㄏㄨㄚ ˋ huà 荻 ㄉㄧ ˊ dí 教 ㄐㄧㄠ ˋ jiào 子 ㄗ ˇ zǐ 畫 ㄏㄨㄚ ˋ huà 荻 ㄉㄧ ˊ dí 教 ㄐㄧㄠ ˋ jiào 子 ㄗ ˇ zǐ to write on the sand with reeds while teaching one's son (idiom) mother's admirable dedication to her children's education