jí​léi​bù​jí​yǎn'ěr

lightning fast

Senses

疾雷不及掩耳 jí​léi​bù​jí​yǎn'ěr lightning fast

a thunderclap so sudden that one has no time to cover one's ears; describes an action that is so swift and unexpected that it catches others completely off guard

References

synonym 疾雷不及掩耳/疾雷不及掩耳 迅雷不及掩耳/迅雷不及掩耳
see 疾雷不及掩耳/疾雷不及掩耳 迅雷/迅雷