On Saturday, Anita posted a picture together with Julian, captioning it, “My hero! Happy birthday”.
In the first picture, the couple can be seen re-enacting the signature Titanic pose, while the second picture shows them snuggling up to each other for a selfie.
Fans quickly left comments on the post wishing Julian a happy birthday, with some expressing their jealousy at the couple’s sweet relationship.
The lovebirds first met each other 24 years ago in Beijing, China, while filming the movie, A Warrior’s Tragedy, and officially announced their relationship two years later, in 1994. The couple secretly registered their marriage while on holiday in America in 2001. Anita gave birth to their son, Morton Cheung, 9, five years later in 2006.