Pay by wechat or AliPay. Etc is directly deducted from the savings card or credit card, and can also be recharged on the mobile phone through channels such as WeChat Alipay ETCAPP. ETC is an automatic toll collection system for expressways or bridges. Through the special short-distance communication between the vehicle-mounted electronic tag installed on the windshield of the vehicle and the microwave antenna on the ETC lane of the toll station, and the background settlement with the bank by using the computer networking technology, the vehicle can pay the highway or bridge toll without stopping.