1, mass. Learning and thinking is the first learning and communication platform specially for mathematics competitions, and it is committed to creating the purest and most professional gathering place for outstanding mathematics lovers with the help of advanced Internet technology. Ai Jianzi's online class is of poor quality and unclear sound quality.

2. Price. The online course of learning and thinking is affordable and cost-effective, with a section from 30 yuan to 100 yuan, while Aijianzi's online course is low in cost-effective and expensive, with a section from 50 yuan to 200 yuan.