“CSTCloud passport is the combination of an email address and a password that you use to sign in to services like escience.cn, DDL , CSP, dHome, mail, LAS. If you don't have a CSTCloud passport, you can sign up for free at any time. ”
May 2016, CSTNET Passport is upgraded to CSTCloud passport.
April 2013, Duckling Passport was upgraded to CSTNET Passport.