yī一onewú无nonesuǒ所whatzhī知know
To know nothing at all; to be completely ignorant.
Literal meaning
one (一) — none (无) — what (所) — know (知)
Origin
A classical four-character phrase describing a state of complete ignorance.
Examples
Wǒ我duì对zhè这jiàn件shì事yī一wú无suǒ所zhī知。
I know nothing at all about this matter.
Tā他duì对diàn电nǎo脑yī一wú无suǒ所zhī知。
He knows nothing about computers.
Usage & nuances
Emphasizes a complete lack of knowledge or understanding.
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