Three: three-character classics. Hundred: Hundreds of surnames. Thousands: A thousand words. Since the Southern Song Dynasty, Saint Amethyst has a history of more than 700 years. It is a rare book for children to learn the traditional culture of China, with more than 1,000 words, which is a household name. Three-character rhymes are easy to memorize, including China's traditional education, history, astronomy, geography, ethics and morality, as well as some folk tales, which are extensive, vivid and concise. Now it is listed in the world children's moral education series by UNESCO. Hundred Family Names is the most popular and widely circulated textbook in China. It was written and popularized earlier than Saint Amethyst. According to the textual research of scholars in the Southern Song Dynasty, the arrangement of the first few surnames in the book is exquisite: Zhao Zhi, since it is the surname of the monarch, should be the first; Followed by Qian, Qian is the surname of King Wu Yue of the Five Dynasties and Ten Countries; Sun was the surname of Princess Ganchu at that time; Li is the king of Southern Tang Dynasty. He judged that "Hundred Family Names" seemed to have been written by Wang when the Qian family in Zhejiang had a country. According to historical records, after the founding of Song Taizu, wuyue still existed for some time, and only in the second year of rejuvenating the country in Song Taizong did he lead his troops to surrender. It can be seen that this book was published in the early years of the Northern Song Dynasty. "Hundred Family Names" adopts four fonts and rhymes. Although its content is not artistic, it is easy to read, learn and remember. Together with Three Amethyst and Qian Wen Zi, it became a fixed textbook in ancient China. This book is quite practical, and it is good to be familiar with it from ancient times to the present.