无 + Noun
无 means "to not have" or "to be without," functioning as a more literary and formal alternative to 没有. It is commonly found in idioms, classical expressions, and formal writing. For example, 无忧无虑 means "without worries or cares."
此地无银三百两。
Cǐ dì wú yín sānbǎi liǎng.
The silver is not here — three hundred taels' worth.
她无兄弟姐妹,是独生女。
Tā wú xiōngdì jiěmèi, shì dúshēngnǚ.
She has no siblings; she's an only child.
世上无难事,只怕有心人。
Shì shàng wú nán shì, zhǐ pà yǒuxīnrén.
Nothing is impossible for a willing heart.