24 hours online recharge. According to official website of Central South University, there are many ways to recharge campus cards, including online recharge, offline recharge and bank transfer. Among them, online recharge can be realized through Zhongnan E-home APP, and there is no time and place restriction, so the campus card of Central South University is recharged online 24 hours a day. Campus card refers to a special IC card issued by Chinese universities for the convenience of students and their own management, which has two functions: identity recognition and consumption.