Tired. The reason is: to control and operate a large number of complex machinery and equipment. Connectors need to constantly learn and master knowledge about systems, programs and network technologies, and need to quickly and accurately process information from many different sources in order to make correct decisions. The use of electronic equipment must be supervised and checked to monitor performance and troubleshoot. In addition, it is necessary to guide and assist technicians to install and maintain equipment, ensure the strong performance and high reliability of equipment, and systematically test new technologies.