"That Winter, The Wind Blows" Song Hye Kyo finally learns about Jo In Sung's real identity and his past.

Recently, the 13th episode of the SBS drama "That Winter, The Wind Blows" revealed Oh Young (Song Hye Kyo) finding out the truth about her fake older brother Oh Soo (Jo In Sung).

This episode features Oh Young entering her secret room to record herself. Oh Young destroys everything in her secret room.

When Lawyer Jang learns about Oh Soo's identity, he is about to get kicked out. However, Oh Soo tells him, "Until the day I leave, I'll make sure I'm a good brother to her." Soon after, Oh Soo goes into Oh Young's secret room and sees the video she recorded.

In the video Oh Young says, "Now I've finally realized that people came into this room. Secretary Wang and you. How much of all this is part of your plan? Even the part where I believe that you're my real brother? Or even up to the part where I really love you? You must be watching this right? How does it feel to see that I'm completely ruined from not being able to escape from all the scars you gave me? You don't feel as though you've won, do you?" Oh Young begins to cry in the video.

Oh Soo becomes devastated after realizing that Oh Young has found out about everything.