HONG KONG, May 16 (AP) -- Jackie Chan and Jet Li -- two of the biggest names in action cinema -- plan to join forces, a news report said Tuesday.

The stars have signed on to do a movie tentatively named the "J&J Plan," the Chinese news Web site Sina.com said.

They're still brainstorming about the plot for their first collaboration, which begins filming next year, the Web site said.

A formal announcement and pre-sales will be made at the Cannes Film Festival, which starts Wednesday and ends May 28, the report said.

Publicists for Chan and Li did not immediately respond to calls from The Associated Press seeking comment.

The two actors made their names as action stars in Hong Kong before moving on to Hollywood. Trained in Peking Opera, Chan pioneered his own comedic fighting style. Li is a former martial arts national champion in China.

Chan's Hollywood credits include the "Rush Hour" series and "The Tuxedo." Li starred in "Lethal Weapon 4," "Romeo Must Die" and "Cradle 2 the Grave."