Peiwen Yunfu is a special book that helps people understand how to write Chinese characters correctly. It was created a very long time ago, over 400 years ago! It's like having a secret book that teaches you how to write Chinese letters the right way.
In the book, there are lots of different drawings that show you the correct way to write each character. Think of it like a step-by-step guide, but instead of words, there are pictures. The pictures show you exactly how to draw each stroke, which is like a special line that makes up the character.
But, why is it important to write Chinese characters the right way? Well, if you don't, it might be difficult for others to read what you wrote. It's kind of like when you're learning how to write letters for the first time - you need to make sure each letter is correct so that it's easy to read.
In summary, Peiwen Yunfu is a special book that helps people learn how to write Chinese characters correctly. It uses pictures to show you the correct way to draw each stroke, which makes up the character. This is important because it makes it easier for others to read what you write.