·X1: Issued to those who intend to study in China for a period of more than 180 days;
·X2: Issued to those who intend to study in China for a period of no more than 180 days;
·Residence Permit: signifies the duration for which the applicant is allowed to reside in China and permits multiple entries during its validity (apply only from Exit-entry Administration Department of Public Security in Mainland China)