Choose to study and think online courses. The reason is that learning while thinking adopts the teaching mode of online teaching by teachers 1, which is one of the earliest online learning platforms in China to apply multimedia interactive technology, and has provided learning services for children since 2009. By 2023, Xueersi will have more than 240 excellent teachers, more than 20,000 hours of online quality courses, students all over the country and many regions around the world, and registered users will exceed 2 million.