Taxi Driver Or Empire Heir

For five years, the male lead hides his billionaire identity as a humble taxi driver to test his wife's love, only to be betrayed when she abandons his dying grandmother for a fake rich lover. After the family heirloom ring is mistakenly given to a kind doctor, he returns as CEO and watches his ex-wife and her lover grovel for investment—unaware the man they humiliate is the empire's new ruler, until he publicly destroys her dreams of marrying into wealth.