Actor Song Ha-yoon attended the presentation of the cable channel tvN new entertainment 'Grassing Sound' at Stanford Hotel in Sangam-dong, Seoul on the afternoon of the 25th.
About Song Ha-yoon
Song Ha-yoon is a South Korean actress. She debuted as Kim Byul but changed her stage name to Song Ha-yoon in 2012. She is best known for her role in the drama Fight for My Way.
 Wikipedia