The initial account number of the cloud classroom software of State Grid University is the student number or work number, and the initial password is the last six digits of the student number. The so-called "cloud classroom" is an internet service in the education and training industry. Users don't need to buy any software and hardware, but only need to rent the interactive live broadcast technology service, so as to realize high-quality network synchronous and asynchronous teaching and training for the whole country.