Retired teachers from Shaanxi Normal University, writes admission letters in Xi'an, northwest China's Shaanxi Province, July 16, 2018. (Xinhua/Zhang Bowen)

Around 4,500 admission letters written by representatives of alumni and retired teachers from Shaanxi Normal University will be delivered to freshmen. (Xinhua/Zhang Bowen)

The hand-written admission letter has become a feature of Shaanxi Normal University since 2007. (Xinhua/Zhang Bowen)

Retired teachers from Shaanxi Normal University, writes admission letters in Xi'an, northwest China's Shaanxi Province, July 16, 2018. (Xinhua/Zhang Bowen)

Retired teachers from Shaanxi Normal University, writes admission letters in Xi'an, northwest China's Shaanxi Province, July 16, 2018. (Xinhua/Zhang Bowen)

Retired teachers from Shaanxi Normal University, writes admission letters in Xi'an, northwest China's Shaanxi Province, July 16, 2018. (Xinhua/Zhang Bowen)