Network problems. Committed to the professional research direction, covering various professional academic research discussions, reading, learning, experience sharing and so on. It is an academic research application that serves graduate students and enterprise researchers in major universities. When I open a private message with this software, I can't see the news. It's a network problem. You only need to change a network to solve this problem. The content covers chemistry and chemical engineering, biomedicine, physics, materials, geography, food, science and engineering, information, economic management and other disciplines, as well as practical contents such as fund application, patent standards, study abroad, postgraduate entrance examination, paper submission and academic help.