Stairs printed with formulas were seen in the campus of Dalian Neusoft University of Information in northeast China’s Liaoning Province on Tuesday. The abnormal stairs are aimed to strengthen students’ memory, according to a professor of the university. /VCG photo
Copyright © 2018 CGTN. Beijing ICP prepared NO.16065310-3
Copyright © 2018 CGTN. Beijing ICP prepared NO.16065310-3