Seven Democratic Party members vowed yesterday to continue a hunger strike and petition campaign despite the Housing Authority's promise not to increase rents in September. Fred Li Wah-ming said the Housing Authority had made a clever decision. 'But the Government still has the obligation to carry out the law which was passed,' he added. The 48-hour hunger strike at Diamond Hill MTR station will end tomorrow morning. Tung Chee-hwa's adviser on housing, Leung Chun-ying, urged the Government to decide as soon as possible whether to impose rent increases on public rental flats. Any further delays would handicap the Housing Authority, he said. Mr Leung criticised the ordinance which limited rent increases to every three years for harming the quality of services and maintenance provided by the Housing Authority. Chan Kam-lam, of the Democratic Alliance for the Betterment of Hong Kong, issued a stern warning that it was illegal for the Housing Authority to ask for any rent increase before the Housing Department had finished its review in September.