1, novel topic: The exercises in Huanggang class are novel and will be optimized according to the students' learning situation. Students will strengthen the consolidation of classroom knowledge after explaining the classroom knowledge; However, the exercises in Huanggang are not novel enough to keep up with the learning of classroom knowledge.

2. Directly hit the test center: The exercises in Huanggang class are closely related to the key points, directly hit the test center and strengthen training, which can help students improve in an all-round way; Huanggang, on the other hand, pays little attention to in-class training and cannot help children strengthen training.