Soongsil University
Hong signed with Busan IPark after graduating from Soongsil University. His first professional goal came directly from a free kick in a 2–1 defeat to Ulsan on 28 November 2015. In the following game, the first leg of a relegation play-off against Suwon City, Hong was sent off for two bookable offences. Busan went on to lose the tie and were relegated to the K League Challenge.