This is a language knowledge science book aimed at children aged 5-14, with a certain degree of storytelling that also makes it suitable for parent-child reading. The main content focuses on the origin and development of the 26 letters, detailing how they evolved from the original Sinai script to Phoenician, and then into Greek letters and the commonly used Latin letters of today. Just like Chinese pictographs, letters also initially had graphical symbol properties. Through this book, readers can intuitively understand the birth and evolution process of the letters, deepening their perceptual knowledge of the letters. They will not only learn to read, write, and use these 26 letters but also understand where they came from.