It’s My Book establishes a system of reading levels based on the high frequently used Chinese characters from authorized Chinese textbook as well as the standards of International Curriculum for Chinese language Education by Hanban, China. 13 levels of Chinese reading set up in a range of 50 to 1,200 Chinese most frequently used characters. Reading text is leveled according to various parameters, including total character count, number of new words, sentence patterns, sentence length, and sentence complexity.
