IF YOU were disappointed with Asia Television's skeleton review of the Tiananmen Square massacre last year, Moving the Mountain, shown at the Hong Kong International Film Festival, can make up for that. A documentary by Michael Apted, who also directed the Oscar-nominated Nell, Mountain reveals hitherto unseen footage and unheard of details of the crackdown. Apted aims to present a kaleidoscopic view of the events of June 1989. He adds to the narration of student leader Li Lu the voices of other student dissidents then on Beijing's most-wanted list: Wu'er Kaixi, Chai Ling and Wang Chaohua. Wanting to deliver the 'other side of the story', Apted smuggled film in and out of China, clandestinely interviewing the movement's leader, Wang Dan and Democracy Wall dissident Wei Jingsheng. The result is a slice of truth spiced with the dramatic. There is Li's account of the nightmarish Cultural Revolution which all but orphaned him when his middle-class mother and educated father were sentenced to labour camps. 'It's a system that denies human rights and controls every part of your life. It seeks every opportunity to punish,' Li says, explaining the deep-seated frustration that finally led to the movement. Beijing's version of the Tiananmen saga is countered by the students who reunited in the United States in 1993. Wu'er says: 'We were not trying to overthrow the Government; we wanted an open dialogue. We wanted reform.' Footage of soldiers gunning down the masses and bloody bodies littering the square also reveals the truth in a way no other programme has. 'The state television said the government troops hadn't opened fire. By that I knew it meant they had,' recalls Wei, who spent 15 years in a small and sunless cell for his part in the fight for reform. Apted dramatises the students' escapes to Hong Kong, the US and Britain. Wang hid herself in a refrigerator while Chai was smuggled out in a lorry. He also adds an unexpected piece of footage - Li's impromptu wedding in the square during the students' hopeless fast for their cause. 'It was breathtaking,' Apted said, 'Li then sees his wife go and never sees her again.' Despite the tragic outcome, the fire of the storm is anything but smothered, the film shows. Wu'er is now hosting the Voice of China broadcast from California to help his countrymen understand human rights. Imprisonment has only made Wang more determined to attain freedom for his country. For Li, the movement has never died. 'Tiananmen is just another attempt to 'move the mountain',' he said. 'It was just a conversation, but the Government answered with guns. Next time, we will not talk.'