In 1983 he began his studies in the Department of Industrial Chemistry at Seoul National University's College of Engineering, earning his degree in 1986.

He then earned a master's degree in Sacred Scripture at the Pontifical Biblical Institute.

He chose as his episcopal motto: Deus Pater, Mater Ecclesia, meaning "God the Father, Mother Church" (Korean: 하느님 아버지, 어머니 교회).

On 28 October 2021, Pope Francis appointed him Metropolitan Archbishop of Seoul to succeed Cardinal Andrew Yeom Soo-jung.

[4] Chung was installed at the Myeongdong Cathedral of Our Lady of the Immaculate Conception on 8 December 2021.