锦书在线 is an iPhone app developed by Shanghai Minhang District Jinshu Online School. It offers comprehensive online tutoring services for primary and secondary school students. With live interactive classes, personalized teaching, and customized tutoring services, students from all over the country can enjoy high-quality and equitable education. The app covers subjects such as Chinese, mathematics, English, physics, chemistry, and science, providing synchronized curriculum content for primary, middle, and high school students. The majority of the teachers are graduates from top universities and teacher training institutions, ensuring professional instruction and tailored learning plans. With complete learning materials and real-time communication with parents, students can enjoy learning while parents can have peace of mind.