To mark the first 'Global Consumer Action Day', the Consumer Council has called for better education about sustainable consumption in Hong Kong. Consumers International is urging its 220 member groups across 115 locations to support its guidelines for sustainable consumption and to incorporate them into curriculums. Wong Koon-shing, head of consumer education at Hong Kong's council, said they had written to the Education Bureau about the issue. 'Hong Kong has a long way to go,' Mr Wong said. 'Sustainable consumption is still a pretty new idea in the city. Despite the government's encouragement, schools often take it as a marginalised concept rather than part of the core values in their daily teaching. There are not many teaching materials talking about this.' Sustainable consumption promotes a minimum use of resources with the least waste and pollution. Friends of the Earth said Hongkongers were notorious overspenders. Hahn Chu Hon-keung of the group said a survey showed a third of residents admitted that shopping brought them a sense of achievement. 'They are seldom aware that it's literally a waste of the limited resources of the Earth,' he said. Meanwhile, the Consumer Council released its price survey on 40 food and household items in Tung Chung. Prices at major supermarkets were generally higher than at smaller shops. Medicated lip balm had the largest difference, ranging from HK$13 to HK$21.90.