1. Learning and thinking online school: Learning and thinking online school, as one of the largest online education platforms in China, provides online courses in various subjects, including Chinese, mathematics and English. The platform has excellent teachers and rich teaching resources, and helps students improve their academic performance through interactive teaching and personalized counseling.

2. Good Future: Good Future is a leading educational technology company in China, with many online education brands such as homework help and Little Ape Search. Homework help provides online tutoring and homework answering services for primary schools, junior high schools and senior high schools, and provides students with personalized learning programs through intelligent algorithms and big data technology.

3.5 1Talk: 5 1Talk is the largest online English education platform in China, providing one-on-one oral English training services. The platform has professional foreign teachers from all over the world to help students improve their oral English and listening skills through online video teaching.

4. China University OCW: China University OCW is an online education platform launched by China University Alliance, which brings together the curriculum resources of first-class universities at home and abroad. Students can learn various open courses for free through the platform, and improve their knowledge and academic ability.

5. Superstar Erya: Superstar Erya is a well-known online education platform in China, providing rich subject courses and learning resources. The platform adopts interactive teaching and personalized learning mode to help students better understand and master knowledge.

These are some well-known online education platforms in China. They all provide high-quality educational resources and personalized learning services, which can help students improve their academic performance and academic ability.