On August 31, Kim So Yeon's press interview was released online.

Kim So Yeon said, "It's been about two years since my life has been all about 'The Penthouse: War in Life', including the preparation period."
She continued, "The journey hasn't been so easy. I mainly tried to take good care of my health so that I can keep up with the busy filming schedule. I worried that I might catch a cold, so I took lots of supplements."

Kim So Yeon responded, "About 20 years ago, my dad got me to read an interview of Kim Hee Ae. He highlighted parts of her interview, and told me, 'Even a great actress like Kim Hee Ae reads her lines over 100 times just for one scene.'"
She continued, "After reading Kim Hee Ae's interview, I was like, 'I have to do that from now on.' Following that day, I really started doing that. While filming 'The Penthouse: War in Life', there was not a single time when I didn't go over my lines more than 100 times."
She went on, "Some may find it funny and cringey to hear that, but it's the truth and I'm confident about myself to say that. As I find myself weak in many ways, I believe practice is key to strengthen my acting skills."

(Credit= 'sysysy1102' Instagram, SBS The Penthouse: War in Life)
(SBS Star)