No, Snail Language APP is a teaching-oriented education platform, covering all textbooks in China. It includes not only textbooks in Shanghai, but also various teaching and research products, mainly in the form of short videos, followed by audio courses and paper teaching and research materials. Focus on the outline, closely follow the teaching materials, develop lesson by lesson, explain the contents of the courses such as Chinese and geography in the senior high school entrance examination in depth, and pay more attention to the compilation and development of teaching materials based on students' grades.