There is no chat box on the horizontal screen of Zhonggong 19 classroom. Maybe the network is bad or stuck. > < br> you can choose to change the line or the browser. < br> 19 classroom is a live broadcast platform for Chinese public education, aiming at providing candidates with better educational choices. The scope covers civil service examination, institution examination, teacher qualification examination, teacher recruitment, bank recruitment, postgraduate entrance examination, state-owned enterprise recruitment, medical qualification, medical recruitment, foreign language training, job search and employment, IT training and other examination fields. Chinese public education has a complete independent research and development system for public service, postgraduate entrance examination and vocational qualification examination at all levels in the country. It makes prediction research and teaching analysis according to the trend changes of various propositions every year, and updates the training system and content in combination with the first-line practical teaching experience, so that the effect of student training is timely, accurate and effective.