Actress Jun Ji Hyun chose Ha Jung Woo as the acting best partner.

An interviewer asked her, during the press conference for the movie "The Berlin File," who she had better chemistry with between Kim Soo Hyun and Ha Jung Woo. She quickly replied, "Ha Jung Woo. He is really funny. I thought that he was a serious person because of all the roles he played in the past. After I got to know him, he's a really funny person."

She continued, "I realized he didn't have to bring down the mood of the film set to act. I learned a lot thanks to him."

She acts as Yeon Jung Hee, who is Ha Jung Woo's wife and an interpreter in an organization.

"The Berlin File," was directed by Ryoo Seung Wan, which is the first time in three years he directed a movie. It is a movie about secret agents who have to fulfill their individual missions. Ryoo Seung Wan's brother, Ryoo Seung Bum, Ha Jung Woo, Jun Ji Hyun, and Han Suk Kyoo were casted to the movie.