expression
this is it; this is the one
Emphatic expression combining これ (this) with the emphatic particle ぞ. Used to strongly point out or assert that something is exactly the thing being referred to, often with a sense of discovery or conviction.
See also: ぞ
これぞ私が探していた本だ。
This is the very book I was looking for.
これぞ日本の伝統的な美しさだ。
This is truly the traditional beauty of Japan.