1. Rich educational experience: Mr. Cai Zixing has rich educational experience, many years of working experience in the field of education, in-depth understanding and practical experience in education and teaching, and can better understand students' needs and teaching methods and provide quality teaching services.

2. Professional knowledge and ability: Mr. Cai Zixing has rich professional knowledge and teaching ability, is familiar with the contents of the subjects he teaches, and can impart complex concepts and knowledge points to students in an easy-to-understand way.