1, 100: 100 is an APP for primary school students, which mainly includes learning contents and exercises of Chinese, mathematics, English and other subjects. It is characterized by rich content and various forms, including knowledge point explanation, exercises, games and other learning methods, which are suitable for children to learn in a relaxed and happy atmosphere.

2. Letters from primary school principals: Letters from primary school principals are learning AIDS for primary school students, mainly including exercises and knowledge points in Chinese, mathematics, English and other subjects.