If you take the college entrance examination by yourself, you can apply for it as a freshman.

However, if it is an ordinary college, the registration will only begin in the first semester of junior year. The specific process is:

You choose the school and major you apply for-online registration-physical examination-and bring the enrollment list, copy of ID card and physical examination form provided by the academic affairs office of colleges and universities. Wait until the reported undergraduate colleges confirm the registration-pay the examination fee (generally 100 yuan or more)-get the admission ticket-take the examination-admit.