PRO-CHINA businessman Mr Philip Wong Yu-hong has resigned from the Housing Authority, saying he is dissatisfied with a new rule that requires authority members to declare their interests. Mr Wong, who is also a Legislative Councillor and one of the first batch of Hongkong affairs advisers to China, is the fourth member to have quit the influential policy-making body this year. The other three are Sir David Akers-Jones, Mr Carlos Cheung Hon-kau and Mr Norman Leung Nai-ping. A member since 1988, Mr Wong has relinquished his position one year before his term was due to expire. Mr Wong yesterday revealed that he had tendered his resignation to the then Housing Authority chairman, Sir David Akers-Jones, and the Director of Housing, Mr Fung Tung, in January but it had yet to be formally announced. Confirming his resignation for the first time yesterday, Mr Wong denied it was politically motivated. ''This is not related to my position as an adviser on Hongkong affairs,'' he said. Sir David, who was formally appointed a Hongkong affairs adviser last week, resigned from the authority last month after being its chairman for five years. Mr Wong said yesterday that he was proud to have been a member, but he was determined to step down. He said his action was prompted by the implementation of a new resolution to ask members to declare their interests. It was also time to go and leave the position to someone else after being a member for so long, he added. ''I thought of stepping down in January when the authority passed a quick resolution to require members to declare their interests,'' he said. Mr Wong said he had complied with the new rules, but did not understand why authority members needed to declare their business interests. ''We are appointed, and if the Government believes we have a conflict of interests, they should not ask us to take up the post. ''I do not have any conflict of interests, but the rule is changed. It is different from my terms of appointment. ''Whether I carry a title or not, the issues will be close to my heart and I will do whatever is possible to help solve the housing problem in Hongkong. ''My resignation will in no measure decrease my determination in solving the problems of the needy.''