Cai Zhong Zhida 100 online school is more reliable. According to Cai Zhong Zhida 100 Online School official website's inquiry, Cai Zhong Zhida 100 Online School is a formal company protected by official website's authentication law. After being registered by the Ministry of Industry and Information Technology, it holds formal and legal business documents and is a legal enterprise, so it is more reliable. "Cai Zhong Zhida 100" refers to a plan implemented by the Ministry of Education of People's Republic of China (PRC) (PRC), which aims to select outstanding high school students and provide them with comprehensive training in subject knowledge, scientific and technological innovation and comprehensive quality, so as to cultivate high-quality talents with international vision and innovative ability.