The mainland has resumed blocks on certain websites that had been lifted during the Olympic Games, with officials indicating for the first time how the censorship targets were chosen. Foreign Ministry spokesman Liu Jianchao said yesterday that the mainland on the whole stuck to an open internet policy, but would still take necessary measures according to the law, as other countries did. 'Undoubtedly, some websites violated Chinese laws. For example, some websites directly created 'two Chinas', treating the mainland and Taiwan province as two separate regions. This is in breach of the Anti-Secession Law, and also other laws,' Mr Liu said. 'We hope that such websites can squarely take on China's concerns, not to do anything that violates the law, and create the conditions for the development of cordial co-operation between China and these websites and the countries where they are based.' The Chinese-language websites of the BBC, Voice of America and Deutsche Welle are some of the Chinese news websites that have been reblocked. Hong Kong-based Apple Daily and Ming Pao, and the Taiwan-based Liberty Times were also back on the blacklist. However, apart from Reporters Without Borders, most other human rights websites appear not to have been blocked. Amnesty International and Human Rights Watch were accessible last night, as were both the Chinese- and English-language versions of Wikipedia. And entries about the Tiananmen Square crackdown appeared unblocked as well. In the run-up to the Olympics, mainland internet censorship caused the International Olympic Committee headaches by breaking a promise that there would be unfettered internet access during the Games. Beijing slightly relaxed internet censorship in mid-July, allowing access to most Chinese-language news sites, including Ming Pao and RTHK. Then, six days before the Games, Wikipedia and all the recently reblocked internet sites became available to the public. Sites relating to Falun Gong, deemed an evil cult by the central government, and the free-Tibet movement, however, remained blocked. So were sites advocating Taiwanese independence. Some in the internet industry expressed concerns during the Olympics that the relaxation on some websites was only a 'temporary show' and would resume after the Games. But Tsinghua University media professor Yin Hong said the unprecedented explanation for the censorship yesterday might point towards more transparent internet management. 'To expect complete acceptance of western-style press freedom is impractical under the Chinese system right now,' Professor Yin said. 'But a more transparent and rational management could probably bring about more overall press freedom on the internet.'