After evading the press for more than two weeks, Chief Executive Donald Tsang Yam-kuen has finally made a public appearance to comment on a number of contentious issues. Mr Tsang voiced concern about the latest medical blunders, denied Beijing's alleged interference in Hong Kong affairs and commented on the renminbi convertibility. But Democrat Lee Wing-tat said merely speaking about the issues would not resolve them. 'While it is good that he has finally surfaced, talking to the public will achieve nothing if he does not do more to improve governance,' Mr Lee said. Mr Tsang called a press briefing yesterday at the Central Government Offices, during which he expressed concern about the recent series of medical blunders. These include drug maker Unipharm importing antidepressants and packaging them illegally, and the most recent case where bottles of sterilised water used to dilute anaesthetic injections were wrongly labelled. He also for the first time hit back at widespread reports that the central and Hong Kong governments had reached a 'consensus' over plans to increase the roles played by delegates to the Chinese People's Political Consultative Conference in Hong Kong's affairs. 'The [central government's] liaison office has already explained that there has never been a consensus. I repeat, there was no consensus. 'But as a government, we must respect deputies to the National People's Congress and CPPCC delegates [and consider] how we currently listen to their views on issues concerning Hong Kong and the mainland,' Mr Tsang said. Comments by Li Guikang, a deputy director of the liaison office, reported earlier by Wen Wei Po about a '10-point consensus' have caused a stir. Critics fear Hong Kong's autonomy will be at risk if CPPCC delegates get to play a greater role in the city's governance. CPPCC delegate Chan Kam-lam, a lawmaker of the Democratic Alliance for the Betterment and Progress of Hong Kong, said there might have been some misunderstanding about Mr Li's comments, which were made at a closed-door meeting in Beijing. 'Mr Li was only raising some possibilities in response to delegates' complaints over the years that they did not get enough support to fulfil their duties,' Mr Chan said. The last time Mr Tsang spoke to the media was during his visit to Beijing earlier this month to attend the national legislature's annual session. After the press briefing, Mr Tsang spoke at a lunch hosted by Credit Suisse, during which the thorny issue of renminbi convertibility was discussed. He admitted full convertibility of the yuan would take a long time.