During the February 4 broadcast of 'Night Goblin', Kim Ji Won described the time she cried the most. After many guesses, Jung Hyung Don eventually got the correct answer which was the moment the actress was cast for a role in the mega-hit drama, 'Descendants of the Sun' by the famous and successful screenwriter, Kim Eun Sook.

She said, "I was already a big fan of Kim Eun Sook because we worked together for 'The Heirs' but I wondered if I would ever receive such a chance again. I heard they were casting for 'Descendants of the Sun' but had no idea it would come to me. She contacted me and asked if I would give it a shot, so on that day, I cried a lot while holding the phone."