husbands and wives:
Jessica Hsuan and Joe Ma (Lady Fan, A handful of love)
Nick Cheung and Sonjia Kwok ( The Last breakthrough)
Joyce Tang and Marco Ngai (Armed Reaction 3/4)
Jessica Hsuan and Roger Kwok (Square Pegs)

Father and Son:
Damien Lau and Chilam Cheung (Point Of No Return)
Ha Yu and Hawick Lau (My Family)
Yuen Wah and Benny Chan (God Of Honours)
Sek Sau and Francis Ng/RonNg (Triumph In the SKies)

Sisters:
Jessica Hsuan and Leila Tong (Square Pegs)
Maggie Cheung and Tavia Yeung (An Awakening Story)

Relatives:
Gallen Lo and Tavia Yeung (The W Files)
Bobby au Yeung and Joyce Tang (AR series)
Deric Wan and Johnson Yuen (Vigilant In The Mask)

Name 4 pairs of tvb actors and actresses that are husband and wife or divorced couples

Jerry Lam and Lily Hong

Frankie Lam and Kenix Kwok
Sean Lau and Amy Kwok

Nick Cheung and Esther Kwan

Michael Miu and Jamie Chik

Adam Cheng and Lydia Shum

Name 4 pairs of tvb actors that are father and son

Lee Ka Ding and Gregory Lee

Lau Dan and Hawick Lau

Sek Sau and Sam Chan

Paul Chun and Benji Keung

Name 2 pairs of tvb actresses that are sisters

Tavia and Griselda Yeung

Niki and Kathy Chow
Race and Rosanne Wong

Name 3 pairs of tvb actors or actresses that are cousins or relatives

Chin Ka Lok and Chin Siu Ho (brothers)

Lai Huen and Gigi Lai (aunt and niece)

Paul Chun and John (David) Keung (brothers)

Lydia Shum and Joyce Cheng (mother and daughter)

Gregory Lee and Lee Wing Hon (brothers)