Passage: In 1976, Jackie Chan received a telegram from Willie Chan, a film producer in the Hong Kong film industry who had been impressed with Jackie's stunt work. Willie Chan offered him an acting role in a film directed by Lo Wei. Lo had seen Chan's performance in the John Woo film Hand of Death (1976) and planned to model him after Bruce Lee with the film New Fist of Fury. His stage name was changed to Sing Lung (Chinese: 成龍, also transcribed as Cheng Long, literally "become the dragon") to emphasise his similarity to Bruce Lee, whose stage name meant "Little Dragon" in Chinese. The film was unsuccessful because Chan was not accustomed to Lee's martial arts style. Despite the film's failure, Lo Wei continued producing films with similar themes, but with little improvement at the box office.Chan's first major breakthrough was the 1978 film Snake in the Eagle's Shadow, shot while he was loaned to Seasonal Film Corporation under a two-picture deal. Director Yuen Woo-ping allowed Chan complete freedom over his stunt work. The film established the comedic kung fu genre, and proved refreshing to the Hong Kong audience. The same year, Chan then starred in Drunken Master, which finally propelled him to mainstream success.Upon Chan's return to Lo Wei's studio, Lo tried to replicate the comedic approach of Drunken Master, producing Half a Loaf of Kung Fu and Spiritual Kung Fu. He also gave Chan the opportunity to make his directorial debut in The Fearless Hyena. When Willie Chan left the company, he advised Jackie to decide for himself whether or not to stay with Lo Wei. During the shooting of Fearless Hyena Part II, Chan broke his contract and joined Golden Harvest, prompting Lo to blackmail Chan with triads, blaming Willie for his star's departure. The dispute was resolved with the help of fellow actor and director Jimmy Wang Yu, allowing Chan to stay with Golden Harvest.

Question: An early Chan film proved to be unsuccessful for what reason?
was not accustomed to Lee's martial arts style