Jia Xinnuo's exclusive book is true. According to relevant public information, as of March 7, 2023, the cumulative training (promotion) of Jiaxin Nuo has exceeded 300,000 person-times. Cassino's faculty, research and development of teaching products, and development of teaching AIDS have been widely recognized by the whole industry and the students who have been promoted to undergraduate courses. Jia Xinnuo's specialty is real.