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)
妄自菲薄
wàng zì fěi bó
1 to be unduly humble (idiom)
2 to undervalue oneself
洛阳纸贵
Luò yáng zhǐ guì
1 lit. paper has become expensive in Luoyang (because everyone is making a copy of a popular story) (idiom)