Visitors look around at the old exhibition hall of China Science and Technology Museum in Beijing, capital of China, on June 24, 2009. The Museum has been open to the public free of charge for 8 days from June 23 to July 1, as it will prepare for the opening of new site. [Xinhua]

Visitors look around at the old exhibition hall of China Science and Technology Museum in Beijing, capital of China, on June 24, 2009. [Xinhua]