A former Xinhua (New China News Agency) official yesterday called on the contenders for the post of chief executive to make public their blueprints on ruling Hong Kong. It did not matter whether the special administrative region chief was a businessman or a judicial figure, but he or she had to present a platform that reflected the interests of Hong Kong people, Wong Man-fong, former deputy director of Xinhua and a political commentator, said. 'If [the candidates] do not talk about their platforms now, we will not know what their thoughts are. This would certainly make things more difficult,' Mr Wong said. Robert Chung Ting-yiu of the University of Hong Kong warned that failure to go public would undermine the credibility of the post-1997 government. 'The worst scenario for the transition of Hong Kong is to have a chief executive without credibility,' he said. Outgoing Chief Justice Sir Ti Liang Yang yesterday won further support for his chief executive bid. Rita Fan Hsu Lai-tai, a leading Preparatory Committee member, said she was happy Sir Ti Liang had announced his candidacy. 'He is a very respectable figure. He has a very good public image. I am very happy that he has accepted the nomination,' she said. Sir Ti Liang's colleague, chairman of the Boundary and Election Commission, Mr Justice Woo Kwok-hing, denied claims that as a judicial figure, Sir Ti Liang lacked management skills.