College residence advisers who used to check accommodation attendance in person can save their time in the digital era. /China Daily Photo

Lv Mengke, working in Heilongjiang University, in northeastern China’s Heilongjiang Province, invented a new way to check accommodation attendance at night by asking students to post group photos on social media chat group. /China Daily Photo

To prevent students sneaking away and taking photos beforehand, Lv gives them instructions as they take the photo, such as needing to use certain gestures or pose in front of the right background. /China Daily Photo

This new policy has inspired students to take group photos in various styles. /China Daily Photo

“When they graduate from school, they will have plenty of group photos for their memories,” said netizen @Biaoqingbao. /China Daily Photo