Network problems. On the one hand, it is the network of students, on the other hand, it is the network of teachers, which leads to the jam in the live lecture. If the APP card dies, the APP server will also die during the upgrade process, and you can shut down and restart it. China Agricultural University, China Agricultural University for short, is located in Beijing. It is a national key university directly under the Ministry of Education of People's Republic of China (PRC), jointly established by the Ministry of Water Resources of People's Republic of China (PRC), the Ministry of Agriculture and Rural Affairs of the People's Republic of China and Beijing. Ranked among the "double first-class", "985 Project" and "265438+" universities. He has been selected into the pilot program of enrollment reform of basic disciplines, 20 1 1 plan,1plan, education and training plan for outstanding engineers, education and training plan for outstanding agricultural and forestry talents, public postgraduate plan for national construction of high-level universities, and scholarship for international students in China.