In The Realms of Joy - Season 1 Episode 16 : Episode 16 1990

WOON tricks CHEUNG into consenting him to marry SIN who will rather die than marry WOON. Despite her protest, CHEUNG insists since he does not dare to go against the will of god. He even threatens to burn her to death if she refuses. When SIN's life is at risk, SIN's maid FUNG comes to her rescue and discloses the secret that SIN is in fact her daughter. TUEN KU once gets drunk and has sex with her. Afterwards KU disappears and FUNG gives birth to SIN. Being unwed, FUNG dares not keep SIN and abandon s her by a stone. CHEUNG later; picks SIN up and she becomes his adopted daughter. Since FUNG wants to stay close to her daughter, she works in the temple and looks after SIN with great care. Years pass, she still keeps that as a secret and discloses it only to save SIN's life. No longer the god-given child, SIN needs not marry WOON. Her family gets reunited and live happily together.