Dear organizers, I appreciate your efforts to hold the DIS 2022 conference in person in Santiago de Compostela. The face-to-face communications are long awaited by scientist all over the world since the COVID pandemic. However, due to the stringent constraints on international travelling from China to other contries, and several weeks in quarantine after returning to our institute, I am sadly incapable of attending the conference in person and presenting the talk on site. Other collaborators are also located in China and we have the same problem. With respect to this situation, I would like to apply for the opportunity to attend the conference online. I am looking forward to your kind reponse. Best Regards, Yukun Song