Billy Lau Nam-Kwong and Ka Lee have appeared together in 4 films between 1985 and 1987, with a combined box office of HK$68.8 million. Every shared film with year, roles and gross, plus who else each works with most.
| Year | Film | Box office |
|---|---|---|
| 1985 | Mr. Vampire | HK$20.1 million |
| 1985 | Mr. Vampire II | HK$17.1 million |
| 1985 | Yes, Madam | HK$10 million |
| 1987 | Eastern Condors | HK$21.6 million |
Billy Lau Nam-Kwong also often with: Wu Ma (6), Lam Ching-Ying (5), Yuen Biao (5), Sammo Hung (4), Billy Chow Bei-Lei (3)
Ka Lee also often with: Sammo Hung (6), Yuen Biao (6), Lam Ching-Ying (5), Paul Chung Fat (5), Wu Ma (5)