1 General Lü Meng 呂蒙|吕蒙 of the southern state of Wu (idiom); model of self-improvement by diligent study (from unlettered soldier to top strategist of Wu)
愚昧无知
yú mèi wú zhī
1 stupid and ignorant (idiom)
拾金不昧
shí jīn bù mèi
1 to pick up money and not hide it (idiom); to return property to its owner
蒙在鼓里
méng zài gǔ lǐ
1 lit. kept inside a drum (idiom)
2 fig. completely in the dark
素昧平生
sù mèi píng shēng
1 to have never met sb before (idiom); entirely unacquainted