Here's why:
* Historical Development: Chinese languages have been spoken in China for thousands of years, evolving alongside the culture and society. The vast majority of Chinese people have always spoken languages that we now group together as "Chinese."
* Common Ancestry: The languages we call "Chinese" are related, descended from a common ancestor. This shared history means that people in different parts of China can understand each other to varying degrees.
* Cultural Identity: Chinese language is deeply intertwined with Chinese culture, history, and identity. It's a way for people to connect with their heritage and share a common understanding.
* National Language: Mandarin, a specific Chinese language, has been designated as the standard language of China, further solidifying its use and understanding across the country.
It's important to note that "Chinese" is a complex and multifaceted term. There are many different languages spoken within China, each with its own unique history and dialectal variations. Mandarin is the most widely spoken, but others like Cantonese, Wu, and Min are also significant.
So, it's not just a matter of "why," but also a matter of "how" - how Chinese languages have developed and become an integral part of Chinese identity and communication.