The image is a digital billboard advertisement for a Vietnamese language learning app called "Zu". The billboard features three different timeslots for learning Vietnamese: 17:30 on December 22, 2018, 17:07 on December 23, 2018, and 17:08 on December 24, 2018. The billboard also mentions that the app offers lessons in Vietnamese and English. The background of the billboard is white with a blue border.