The press conference for upcoming SBS drama 'Three Days' took place at Imperial Palace in Nonhyundong on February 26. �The drama centers on an urgent search for the president who goes missing after three shots are heard. �On this day, actresses Park Ha Sun and So Yi Hyun spoke up about why they decided to take on their roles and how they prepared for it. �

Park Ha Sun said, "Truthfully, people think of me as weak. �The image that people see is not strong. �I wanted to show my strength. �I want to show a different self through the character Yoon Bo Won, one girl among the existing characters as well as an easygoing and warm-hearted police constable who works in the countryside."

So Yi Hyun said, "The script was good and I was happy to get to work with good seniors."

SEE ALSO: SECRET's Song Ji Eun opens up about how her parents initially reacted to dating Park We

The two also talked about going to action school. �Park Ha Sun said that she did not know whether she would be doing any action scenes, but she wanted to try it and attended action school 6 hours a day for a total of 60 hours. �As a result, she lost a lot of weight, which, in turn, lessened her stamina, but she tried to improve this by walking up stairs whenever she had the chance.

So Yi Hyun said, "From a while back, I had a lot of roles for which I needed to go to action school. �Even for this time, seeing as how I'm a guard, I diligently prepared. �I am doing my best so I can keep up with the other people acting as guards."

The first episode airs on March 5!