The referee will be Filipino Danrex Tapdasan, who was last in the ring on February 1st. He was also the referee in Hong's most recent bout against Mari Ando last August.
The judges will be Joong-Suk Kwon, from South Korea, Katsuhiko Nakamure, from Japan, and Salven Lagumbay, from Philippines. Meaning each fighter is given one judge from their homeland whilst the third judge is neutral.
The WBO supervisor for the bout will be Thai based, American born Filipino Leon Panoncillo, who also supervised on the Hong/Ando fight last August.