The letters of a real term had been then employed to make an acronym. To put it briefly, the word existed, after which you can the acronym was established from the letters within the term. Backronyms: en.wikipedia.org/wiki/Backronym知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。Nous vous conseil