1, Chen Jiahao has rich knowledge and experience in the field of Olympic mathematics. I have spent many years studying and teaching Olympic Mathematics, and I am very familiar with different levels of mathematical problems and problem-solving skills. Students can be taught various mathematical concepts and methods to help them achieve good results in the Olympic mathematics competition.

2. Chen Jiahao adopts effective teaching methods and strategies, and can teach students complex mathematical concepts and problems in a simple and understandable way. They have good communication skills and patience, can understand students' learning needs, and provide appropriate guidance according to students' personalized characteristics.