A teacher processes a piece of wood in Southwest China’s Chongqing Municipality, March 6, 2016. With a strong, shared interest in wood, Cui Xu from Chongqing Jiaotong University and Wang Jiu from Sichuan Fine Arts Institute have collaborated to collect wood from all over the world and plan to build a wood specimen bank. They have made more than 60 specimens since 2015. (Photo: China News Service/Zhou Yi)
