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- Upon the issuance of an Alien Registration Card, the visa on the applicant’s passport is no longer valid.
- Re-entrance is only possible when the Alien Registration Card and passport are presented on his or her departure and re-entry into Korea.
- The arrival date should drop into the validity of alien registration card should be
   For example : Validity : 25 February 2016 / arrival (entry date) 26 February 2016 → Not allowed to enter
   Validity : 25 February 2016 / arrival (entry date) 20 February 2016 → allowed to enter

- When a student either has fully completed the entire education course or dropped out and plans to return to his or her nation, he or she must consult with the international office, and leave their alien registration card at the Korean Immigration Office counter at the airport.