He appeared in several films with Jackie Chan during the 1980s and 1990s, such as playing Inspector "Uncle" Bill Wong in the original Police Story series, including his final movie role in Police Story 4: First Strike in 1996.

Due to his frank assessment and criticism in the horse racing circles, he was respectfully called "Uncle Biu".

Due to the loss of broadcasting rights, Tung was not able to continue as a commentator on television and he joined the Hong Kong Jockey Club as a radio show host.

On February 16, 2006, Tung was admitted to St. Paul's Hospital on Hong Kong Island due to physical discomfort.

On February 22 at 11 pm, due to pulmonary fibrosis leading to organ failure, Tung died in the hospital in the company of loved ones, at the age of 72.

A funeral committee was set up and Tung's wake was held on March 13, 2006, at 4 pm at the Hong Kong Coliseum.