Thank you for your reply. We understood what you let us know about the position. Regarding the letter, is our understanding correct that both of the head of the department and the head of the personnel department (who usually issues this kind of letter) are currently away from the campus due to the current epidemic and are not able to issue this letter. Or, is it possible that either of them issue the letter even if it takes a little time? Please kindly let us know the situation.