Taiwanese filmmaker Giddens Ko , presenting “Kung Fu” at the Far East Film Festival on Saturday, revealed that Stephen Chow contributed to the film’s development and reflected on the more than decade-long journey required to bring his most technically ambitious project to screen. Speaking on a panel moderated by Kevin Ma, Ko and his longtime collaborator Kai Ko – who stars in “Kung Fu” and wrote, produced and acts in “I Blew Out the Candles Before Making a Wish,” which has its world premiere at the festival Sunday – discussed the pair’s 15-year working relationship, the demands of wuxia filmmaking and their respective next projects. Ko adapted “Kung Fu” from his own novel, written some 25 years ago, and first attempted to shoot it as his second feature around 2013. Fresh off the commercial success of his debut, “You’re the Apple of My Eye,” he pulled back from the project, attributing the retreat to an excess of confidence. Popular on Variety “I was so happy with the success of that story,” Ko said.…