1, Huanggang Xueba notes mainly cover all subjects from junior high school to senior high school, including Chinese, mathematics, English, physics, chemistry and biology. And Rong Heng's notes are mainly aimed at high school subjects, and the content is relatively concentrated.

2. Huanggang Xueba's notes mainly focus on sorting out knowledge points, focusing on the relationship between disciplines, integrating knowledge points from different disciplines, and helping students to establish a comprehensive knowledge system, while Rong Heng's notes pay more attention to in-depth analysis of knowledge points, with the aim of answering students' difficult questions.

3. Huanggang Xueba notes are suitable for students at all levels, explaining the knowledge points in detail, suitable for students with poor foundation, while Rongheng notes pay more attention to the deepening and expansion of knowledge points, suitable for students with good foundation.