Jiao Changhong. According to the website of yanggu county Municipal People's Government, as of July 13, 2023, Jiao Changhong, the principal of yanggu county No.1 Primary School, shared the school-running concept and management experience of No.1 Primary School with the participants. At the meeting, Liu, deputy director of yanggu county Education Bureau, analyzed the current situation of education and teaching in all subjects in our county, so it was Jiao Changhong.