Need. University of Science and Technology Beijing has 100 kWh of free electricity in each dormitory every semester. I have to answer the electricity myself every semester. After use, go to the self-service machine or go to the water and electricity office to buy it. You have to use an electric card to get electricity and buy electricity. The electric card is usually placed in the building management, and you can borrow it with the student ID card of University of Science and Technology Beijing when necessary. Pay attention to the safe use of electricity, do not overload the use of electricity, do not touch with wet hands or wipe lamps, switches and other electrical appliances with wet cloth.