In ŌĆ£Annals of the Joseon DynastyŌĆØ special on MBCŌĆÖs Those Who Cross the Line ŌĆō Returns, Sul Min Seok, Jun Hyun Moo, Kim Jong Min, Yoo Byung Jae, Shin Ji, and Alberto continued their journey to learn the hidden historical sites in Korea. The cast members traveled to a replica of a prison called ŌĆ£Jeonokseo.ŌĆØ The beautiful visuals made them question if it was actually a prison. This replica prison was actually used as the set for BTS SugaŌĆÖs ŌĆ£DaechwitaŌĆØ music video. It was a surprise for the cast to learn that such an impressive and memorable historical site was used as the set of a music video. Thanks to the world star BTS, this has become a hotspot for fans worldwide. Source (1)