In "Heart to Heart" Chun Jung Myung found out about the identity of Choi Kang Hee.
On the 10th episode of tvN Friday/Saturday drama "Heart to Heart" broadcast on Feb. 7th, Cha Hong Do (played by Choi Kang Hee) received a marriage proposal from Ko Sang Kyu (played by Joo Hyun).
Cha Hong Do had a disorder where she could not associate with other people in public. With this disorder, she transformed into an old granny Oh Yeong Do and worked in Ko Sang Kyu's house. Ko Sang Kyu called Cha Hong Do out and gave her a gift. Ko Sang Kyu then confessed, "Let's live together." At this point, Cha Hong Do received a call. Ko Sang Kyu said that he would go to the bathroom and got up from the seat.
The person that called Cha Hong Do was no other than Ko Yi Suk (played by Chun Jung Myung). Ko Yi Suk had been following Ko Sang Kyu. After listening to the sounds over the phone, Ko Yi Suk realized that Cha Hong Do was in the same place as him.
Ko Yi Suk said to Cha Hong Do, "Wave your right hand." Afterwards, Ko Yi Suk realized that Cha Hong Do and Oh Young Rae (played by Choi Kang Hee) was the same person. With that, he was in shock.
