According to a media outlet, Ju Ji Hoon and Kingdom writer Kim Eun Hee participated in todayŌĆÖs recording of Yoo Quiz On The Block. Yoo Quiz on the Block is a program where the hosts Yoo Jae Suk and Jo Se Ho chat up the civilians on the street and throw them surprise quizzes. In recent episodes, however, they have been meeting with celebrities or public figures and hearing their stories instead of going out in the streets due to the COVID-19 pandemic. This time, Ju Ji Hoon and writer Kim Eun Hee will appear on the show and make another big splash. The two joined hands for the Netflix original series Kingdom and will also work together for the new tvN drama Cliffhanger (literal title). Meanwhile, Yoo Quiz On The Block airs every Wednesday at 8:40 p.m. KST. Source (1)