SEE ALSO: INFINITE to temporarily halt all promotions for their comeback in light of member Sunggyu's family tragedy

In 'Single Rider', Gong Hyo Jin worked with Lee Byung Hun and Sohee. When asked about Sohee, Gong Hyo Jin shared, "[Sohee] got me wondering if the only other actress I'd worked with who had experience working in two different fields was IU. Of course, Sohee is currently only active as an actress, but they (Sohee and IU) are different from other actresses."

She continued, "It's distinctly different, getting to know a young, rookie actress, versus getting to know someone who has been working in this field since they were in their teens. I thought maybe they would be self-centered, but after seeing them, I thought they seemed more 'adult' than I am." 

Gong Hyo Jin has worked with IU in the KBS2 drama 'Producer'. When comparing the two idol-turned-actresses, she said, "IU is an elderly adult in the body of a young girl. She had more patience and control than I did. Even when the process got delayed, she controlled herself as if she were simply listening to music." About Sohee, Gong Hyo Jin commented, "Sohee isn't like an adult in a young girl's body, but more a very polite young girl. IU is polite too, but Sohee was polite to the point of almost discomfort. She seems to be naturally thoughtful, but she's also cute when she makes jokes like someone her age should."