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)
聚沙成塔
jù shā chéng tǎ
1 sand grains accumulate to make a tower a tower (idiom); by gathering small amounts one gets a huge quantity