Dear Doctor,
Arknights 1st Anniversary Celebration Event Part.1 will soon be live on Dec. 30, 10:00 (UTC-7) and some of the contents are available for a limited time. Please refer to the following notification for the event details.
#Arknights1stAnniv #Arknights #Yostar

https://twitter.com/ArknightsEN/status/1343430552414666753