Before the registration deadline, you can log in the HSK test service website, www.chinesetest.cn, by inputting your user name and password. Then on the "Personal Center" page, edit your registration information in the "Test Record" option. The registration-related modification is limited to your personal information only and your test level and testing center cannot be modified. If it’s later than the registration deadline, please contact the testing center of your registration to make changes.