Look at your personal needs. If you are 18 years old, full-time undergraduate, and have been a freshman or above, you can apply for the student credit card of LINEFRIENDS through the credit card website of CCB. According to the regulatory requirements, after customers apply online, CCB will first issue student credit cards with "sealed quota" (except those applied under the on-site guidance of CCB salesmen). After the customer invites the second repayment source to any outlet of CCB to sign the Statement of the Second Repayment Source and the Application Form for Adjustment of Credit Card Limit for College Students of China Construction Bank, the credit card limit can be cancelled.