Wu Yaohui, a retired teacher from Shaanxi Normal University, writes an admission letter with Chinese writing brush in Xi'an, northwest China's Shaanxi Province, July 16, 2018. Around 4,500 admission letters written by representatives of alumni and retired teachers from Shaanxi Normal University will be delivered to freshmen. The hand-written admission letter has become a feature of Shaanxi Normal University since 2007. (Xinhua/Zhang Bowen)