He is Professor, Pommerenke Lecturer, and the former director of the Divinity School of Chung Chi College, Chinese University of Hong Kong (CUHK).
His master thesis' topic is "The Adaptation of Religious Belief and Cultural Environment of Chinese Christians in the late Qing Dynasty (1860-1911)," supervised by Wang Erh Ming (Chinese: 王爾敏).
His PhD topic is "Saving the Nations in Christianity: Xu Qian, Feng Yü-hsiang, and Zhang Zhijiang," supervised by Lau Yee-cheung and Leung Yuen-sang.
[2] Ying was Assistant Professor and the Director of Christianity and Chinese Culture Research Centre (CCCRC) at Alliance Bible Seminary between 1993 and 2004.
He was Director of Divinity School of Chung Chi College between 2014 and 2020, succeeded by Francis Ching-wah Yip in July 2020.