THOUSANDS of people from all walks of life, ranging from outspoken Legislative Councillors to polite beauty queens, gathered recently at Victoria Park to spread the save-the-earth message. To mark its tenth year, and promote environmental protection in an enjoyable way, Friends of the Earth (FoE) organised the Eco-Olympics 1993. The fun-filled family day focused on healthy living and environmental fun and games under the slogan ''It's fun to be green''. Innovative games, including a jogging contest, obstacle race, maze, auction, and bouncy castle, as well as booths showing and selling environmentally friendly products, games and refreshments, were used to painlessly teach participants about protecting the environment. Legco members Christine Loh, Emily Lau, Peter Wong and Man Sai-cheong put aside political differences to unite in support for protecting the earth. Participating in the ''Jog for the Earth'' and ''Environmental Obstacle Race'', the legislators showed that they could be active and energetic on the sports ground, as well as in Legco. Children at the event were delighted by an interesting maze - the Amazing Aluminium Can Recycling Factory. Supervised by popular childrens' television host Ander Jun and child-star Pat Lam Cheng, participants pretended to be recycled aluminium cans and, as they proceeded through the maze, learnt how cans are collected, shredded and baled, re-melted, caste, rolled and then reformed back into cans. The maze has been enjoyed by tens of thousands of children in the United States, Britain, Malaysia, Singapore, Korea, China and Taiwan before coming to Hong Kong. While young children were playing in the maze, older teenagers joined the celebrity sports auction for Chow Yun-fatt's baseball cap, Aaron Kwok's table tennis racket, Zhuang Yung's swimming goggles and Ander Jun's football. The Metro FM Select Concert, with pop singers including Hacken Lee, Deric Wan, Sam Tsang, Roman Tam and popular band Tai Chi, was the climax of the event-filled day. Speaking at the opening, Mrs Mei Ng, Director of FoE, urged people to act now to improve the environment. ''Every tree we destroy today will affect the next generation. Statistics indicate more children are suffering from health problems caused by pollution.'' The organiser has encouraged visitors to bring along used moon cake tins for 50 per cent discount for admission. Admission fee is $20. All proceeds will go towards FoE's future environmental campaigns.