Taking China as an example, what are the contributions of writing to human development?

First, China script enables people who use different dialects in China to communicate smoothly.

Second, it unifies the scripts in various places, so that the central government decrees, local conditions and cultures can be quickly conveyed.

Third, it enables ancient history and ideas to be passed on.

Fourth, it solidifies the existing knowledge of human beings, and avoids mistakes or loss caused by word of mouth.