DENG XIAOPING finally came to Hong Kong yesterday - even dining at the Regent Hotel last night, but only a double of his. Cao Can, a 64-year-old Deng double, has been mimicking the late paramount leader since 1979. 'I feel very honoured to be able to impersonate such a great man. 'Now that Deng Xiaoping has already left us, I as an actor have the responsibility to act out his charisma and honourable character to the people. This is a great challenge,' Cao said. Deng was not the only Chinese leader at a charity dinner organised by the Distinguished Citizens Society International Kowloon (HK): Mao Zedong and Sun Yat-sen were there as well, played respectively by Peng Jiang and Shi Weijian. 'One of Deng's greatest wishes was to come to Hong Kong when it reunifies with the motherland. I'm representing him to take a stroll here, hoping he can rest in peace,' Cao said. 'I once met Deng,' he said. 'I sat and watched him for an hour to observe his actions and expressions.'