 What is the other profession of Jung Yong-hwa's costar, who is considered the one of most prolific actresses of her age in South Korea?
Heartstrings (TV series): Heartstrings (; lit. Park Shin-hye:  Considered one of the most prolific actresses of her age, Park received further recognition for her roles in the television dramas "You're Beautiful" (2009), "The Heirs" (2013), "Pinocchio" (2014–2015) and "Doctor Crush" (2016).
i don't know