Dear Sunnie zhou,
My name is Shoko Niwa, and I'm OnStage OC chair this year.
Regarding the decision of participating teams to the international event, unfortunately, I'm not in charge of it. The matter is talked between the representatives of the international committee and every regional representative. It is coordinated after consultation so that teams can participate equally from every region.
If you have asked about it to the federation via your regional representative already, please waite a response from them.