A press conference was held Monday in South China's Guangzhou to promote the film "Bruce Lee, My Brother's Story," from Hong Kong director Wilson Yip, which is based on the kung fu star's early years, QQ.com reported.

Along with director Yip, cast members Aarif Lee, Tony Leung, Christy Chung, Michelle Ye, Heung Kam Lee, Gong Mi and Xie Tingting also attended the ceremony. Bruce Lee's older sister and younger brother also appeared.

July 20 was also the 37th anniversary of Bruce Lee's still mysterious death. People have remained divided as to whether Lee died from illness or murder.

The film has been a work in progress for four years, and is expected to premiere in November.

Aarif Lee, who plays the kung fu star in the film, resembles Lee and donned Lee's classic costume. In order to portray this character, the actor has trained intensively to develop a muscular physique. However, Aarif admitted the most difficult part for him was not the kung fu sequences but the dancing.

Executive producer Manfred Wong revealed that the film, more than 100 minutes long, selects moments from Bruce Lee's boyhood, and that they are also planning a sequel about the legendary star.

Hong Kong film stars Tony Leung and Christy Chung play Lee's parents in the film. As Bruce Lee fans, the stars said they were honored and excited to be involved in such a film.

The film was authorized by Lee's family. After four years of preparation, the cast and crew vowed to present audiences with the kung fu star's real experiences. They also revealed that the film includes some never-before-seen stories from Bruce Lee's life.

Filming began early this month and is set to be finished in August.

Born in the U.S., Lee is considered one of the most influential martial artists of the 20th century. He was found dead in Hong Kong on July 20, 1973, at the age of 33.