Xueersi is a company focusing on K 12 education. In recent years, it has acquired a number of educational institutions and gone international. The learning machine has provided more than100000 minutes of self-developed content, 95% of which were recorded by S-level teachers after learning and thinking. Star, on the other hand, is a training institution that offers various courses, including language, mathematics, science and music. Its advantage lies in providing small class teaching and one-on-one tutoring, which can better meet the individual needs of students. In contrast, learning and thinking are good.