 In the dynasties following the Song, the "Three Character Classic", the "Hundred Family Surnames", and "Thousand Character Classic" came to be known as "San Bai Qian" (Three, Hundred, Thousand), from the first character in their titles.They were the almost universal introductory literary texts for students, almost exclusively boys, from elite backgrounds and even for a number of ordinary villagers.Each was available in many versions, printed cheaply, and available to all since they did not become superseded.