For management needs, the school will choose 1 1 to cut off power in the afternoon. In this case, it takes time to go online: 1. Because of the hot weather in summer, the air conditioner is usually turned on. The school can't cut off power, or it will leave electricity in several sockets such as air conditioners. Then you can use the plug of the air conditioner to lead the patch panel out for use. 2. If the time is not particularly long, then you can barely support it for a while with a laptop. 3, you can go to the study room to surf the Internet, and the school will also open some study rooms for study at night. Suggestion: moderate surfing the internet is the first priority that is beneficial to the body and mind.