1, teaching content is comprehensive: the teaching content of Deng Cheng's online mathematics course is comprehensive, covering all mathematical knowledge points from primary school to high school, including integer operation, fractional operation, decimal operation, algebraic equations, geometric figures and so on.

2. Teaching has its own characteristics: Mr. Deng Cheng's lecture voice is crisp and loud, the context and ideas are clearly expressed, and he is not ostentatious or grandiose. The process of solving problems is simple and easy to understand, and he is not slow-witted and distracted. By brushing the questions, he left room for students to summarize the questions and solve the problems.