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)
咆哮如雷
páo xiào rú léi
1 to be in a thundering rage (idiom)
大错特错
dà cuò tè cuò
1 to be gravely mistaken (idiom)
如雷贯耳
rú léi guàn ěr
1 lit. like thunder piercing the ear
2 a well-known reputation (idiom)
掌声雷动
zhǎng shēng léi dòng
1 thunderous applause (idiom)
蒙在鼓里
méng zài gǔ lǐ
1 lit. kept inside a drum (idiom)
2 fig. completely in the dark
蒙昧无知
méng mèi wú zhī
1 benighted (idiom)
2 ignorant
雷厉风行
léi lì fēng xíng
1 pass like thunder and move like the wind (idiom); swift and decisive reaction
雷打不动
léi dǎ bù dòng
1 not shaken by thunder (idiom); the arrangements are unalterable
2 to adhere rigidly to regulations
3 will go ahead whatever happens (of an arrangement or plan)
雷声大，雨点小
léi shēng dà , yǔ diǎn xiǎo
1 loud thunder, but only tiny drops of rain (idiom); a lot of talk, but no action
2 action speaks louder than words
3 his bite is worse than his bark
黄钟毁弃瓦釜雷鸣
huáng zhōng huǐ qì wǎ fǔ léi míng
1 lit. earthern pots make more noise than classical bells
2 good men are discarded in favor of bombastic ones (idiom)