Campus Tianyi broadband. You have to send a text message every time to get the password. How to connect a wireless router

Tianyi WiFi connection doesn't seem to need a password, and it is open. Just connect directly. However, when you are browsing, no matter what URL you enter (except blank), a page will be opened first for you to enter your account number and password (the account number is your mobile phone, and the password is randomly sent to your mobile phone), and you can surf the Internet normally after logging in.