Spy-case academic Li Shaomin has criticised the Government for not giving enough help to Hong Kong-based academics detained on the mainland. His criticism in an article published in the New York Times yesterday came as Chief Secretary Donald Tsang Yam-kuen began his official visit to New York. The City University academic was expelled to the US after being convicted by a Beijing court in July of spying for Taiwan. He was allowed to return to Hong Kong on July 30. In his article he lamented that 'no high-level academic officials from Hong Kong' had voiced their concern about his case before he was released. He said the Government had 'not sufficiently raised its voice to ensure fairness for Hong Kong residents detained in China'. 'For example, Xu Zerong, another Hong Kong-based academic arrested more than a year ago on vague charges of endangering state security, has received little help from the Hong Kong Government,' Dr Li said. 'At a minimum, the Government should insist that detainees be able to acquire legal documents and have visits from Hong Kong Government representatives, and review the evidence against them when they face legal charges in China.' He said Hong Kong freedoms 'may wane' if not protected. 'I am fortunate to be out of prison. But I fear that others will suffer what I did if few in Hong Kong or our Government are willing to protest to protect basic rights,' he said. A Security Bureau spokesman said the Government could not interfere with the mainland courts, under the principle of 'one country, two systems'. The appeals and requests of Dr Li's family had been conveyed to mainland authorities during his detention, he said. The bureau also pointed out that Dr Li was a US citizen as well as an SAR resident.