Jade Goddess of Mercy (2003)

Both are about the undercover cop. They sacrify their family and love life for the country and for the job. They involve in dangerous mission and duty.

Both are adaptions of the same story.

Both female lead played the role of undercover, secret spy. She is beautiful, both male lead fell for her. Their relationship growth stronger and danger

Undercover cop, revenge for parent killer, strong female lead, male lead fell for her, martial art, fight, touch of romance,

Both the drama and the movie are based on the same novel by the Chinese writer Hai Yan.

Both main lead got into the mob then join the good side become spy.
Lots of action, mystery, thriller
Both are older movie