From March 19th to March 31st, you can get a Server Transfer Box in the mailbox when login game, it is a letter from Server Transfer Officer. If you need to transfer server often, you can pay 9999 CPs to open the box and get 3 Server Transfer Tokens, 1 Server Transfer Token can be used to transfer server once, give it to Server Transfer Officer to transfer server. The normal price to make a server transfer is 3999 CPs, the Server Transfer Box will save you 1998 CPs.
Note: The Server Transfer Token will expire in 90 days, please use it in time.