Yoon Kyun-sang said through his instagram on the 15th, "If you want to be hard, how do you know! Sa... Sa... Sari Gomtang" with a photo posted.
Yoon Kyun-sang in the public photo is a Celebratory photo in front of Lee Jong-suk's Gifted coffee car Yoon Kyun-sang, wearing a dandy suit, smiled softly and boasted a 9th grade ratio.
On the other hand, Yoon Kyun-sang will appear with Kim Yoo-jung on the JTBC New Moon drama 'Once Clean', which will be broadcasted on the 26th.
About Yoon Kyun-sang
Yoon Kyun-sang is a South Korean actor who drew attention with his supporting roles in the television series Pinocchio, Six Flying Dragons and The Doctors.
 Wikipedia