无人不知 known to everyone
Explanation
形容非常出名，人尽皆知。
Describes something that is very famous and widely known.
Origin Story
话说唐朝时期，长安城内有一位技艺高超的木匠，名叫李巧手。他制作的家具不仅精致美观，而且经久耐用，深受达官贵人的喜爱。他制作的一张红木雕花床，更是精美绝伦，一时间，长安城内无人不知，无人不晓。就连皇宫里的妃子们，也纷纷慕名而来，想要定制一张这样的床。李巧手每天都忙得不可开交，订单堆积如山，但他从不马虎，每件作品都力求完美。他的名声也因此传遍了大江南北，成为了家喻户晓的人物。
In the Tang Dynasty, there was a highly skilled carpenter in Chang'an city named Li Qiaoshou. The furniture he made was not only exquisite and beautiful but also durable and highly sought after by officials and nobles. A rosewood bed with carved flowers that he made was exceptionally exquisite, and in a short time, it became known throughout Chang'an. Even the concubines in the imperial palace came to him to order a bed of this kind. Li Qiaoshou was busy every day, with a mountain of orders, but he was never careless, striving for perfection in every piece. His reputation spread throughout China, and he became a household name.
Usage
用于形容人或事物非常出名，人尽皆知。
Used to describe a person or thing that is very famous and widely known.
Examples
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这则新闻无人不知，无人不晓。
zhèzé xīnwén wú rén bù zhī, wú rén bù xiǎo
This news is known to everyone.
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他的事迹，无人不知，无人不晓。
tā de shìjì, wú rén bù zhī, wú rén bù xiǎo
His deeds are known to everyone..