Dr. Choy majored in Systematic Theology when studying in the Trinity Evangelical Divinity School and majored in Calvin studies in Calvin Theological Seminary. Before answering the call to be a pastor, he has engaged in China trade for five to six years. He has been teaching at ABS since 1998, focusing on subjects like church history, Calvin theology, research methodology, Pauline theology and Homiletics. He is also responsible for ABS’s Putonghua programs and pays close
attention to the modern development of Chinese churches and Chinese theological education.