If the GIF animation created by the fast hand was deleted from the user's fast hand collection, the trace of the GIF animation in the fast hand would disappear. Because Kuaishou was a social media application, GIFs uploaded by users needed to be stored on Kuaishou's server. If the user deleted the GIFs, their storage location on Kuaishou would change. Therefore, when the user viewed the GIFs on Kuaishou, their traces would disappear.