From Oriental Morning Post via sina.com (in Chinese), translated by CDT (link):
Vice Director Luo Ge of China’s National Space Administration said with a little frustration that he hoped the United States be more “open” in cooperation in space programs with China during his visit to Washington, DC.
Guo Xiaobing, a space strategy expert in Beijing, said the main reason of zero cooperation is the US concern thinking that China’s space programs are not transparent enough. But he also noted that there are fairly amount of voice in the US calling for China-US collaboration in the areas, e.g. American satallite producers want to lift the ban of exports to China.
US Congressman Mark Kirk said during his visit to China in January that he hoped the Chinese government study the technical feasibility of having Shenzhou spacecraft to dock with the International Space Station, so that it can do personnel rescue in emergency. An official with the Center for Strategic and International Studies also said that manned space flight is very possibly the first program for cooperation between China and the United States.