Song Hye Kyo also spoke about the praise received for her acting through this drama. Song Hye Kyo first explained, "When I read the script about the scene when Moon Dong Eun first appears in front of Park Yeon Jin and the perpetrators again, I didn't know the level (of how crazy)
I should act because the script just said 'like a crazy b***h.' So, I acted with the degree I had in mind, but the director asked me to 'act more like a crazy b***h.' That's when the intensity kept increasing."
When asked how she felt when she received praise for her acting transformation, Song Hye Kyo responded, "I felt a little bad.
I wondered what I had been doing until now.
I realized I hadn't been showing the viewers this side of me until now, and that I should work harder."