I knew a Chinese woman who taught me a lot about Chinese languages. One of them was about 汉语's etymology.
I was told that all parts of these characters had a meaning connected to the History of Chinese language. Well, the story was like this:
Chine was once divided in 5 parts, each one had an emperor. Each emperor had a single language spoken among his people. That's why it is easy to identify characters as five (五), mouth (口). It is also easy to identify the "language" character and the water prefix in the first character. So, when China was unified, only a single language was spoken by everyone.
Is this story true? If not, what's its etymology? How is it different from 中文 ?