Doctor Wong

He worked as a surgeon at a public hospital for many years.
He once saved the life of Wu, a childhood friend of his son the Ghost, which inspired Wu to become a doctor.
He reprimanded his son for beating a classmate at school who was tormenting another classmate and seriously injuring him, and his son rebelled and ran away.
He disowned his son.
He lost contact with his son for many years, but after his wife's death, he decided to move to Malaysia.
The Ghost, upon learning of this, reunited with him and reconciled with him.