Tourists visit a tank at the weapon museum of Nanjing University of Science and Technology [NJUST] in Nanjing, capital of east China's Jiangsu Province, March 24, 2013. The NJUST opened to public to celebrate its 60th anniversary Sunday. The weapon museum collects about 6,000 weapons since the First World War. [Xinhua]

A boy watches a gun barrel at the weapon museum of Nanjing University of Science and Technology [NJUST] in Nanjing, capital of east China's Jiangsu Province, March 24, 2013. The NJUST opened to public to celebrate its 60th anniversary Sunday. The weapon museum collects about 6,000 weapons since the First World War. [Xinhua/Wang Xin] 

Two boys visit a missile at the weapon museum of Nanjing University of Science and Technology [NJUST] in Nanjing, capital of east China's Jiangsu Province, March 24, 2013. The NJUST opened to public to celebrate its 60th anniversary Sunday. The weapon museum collects about 6,000 weapons since the First World War. [Xinhua/Wang Xin] 

Two children watch a gun barrel at the weapon museum of Nanjing University of Science and Technology [NJUST] in Nanjing, capital of east China's Jiangsu Province, March 24, 2013. The NJUST opened to public to celebrate its 60th anniversary Sunday. The weapon museum collects about 6,000 weapons since the First World War. [Xinhua/Wang Xin] 

Tourists visit a missile at the weapon museum of Nanjing University of Science and Technology [NJUST] in Nanjing, capital of east China's Jiangsu Province, March 24, 2013. The NJUST opened to public to celebrate its 60th anniversary Sunday. The weapon museum collects about 6,000 weapons since the First World War. [Xinhua] 

Tourists visit a tank at the weapon museum of Nanjing University of Science and Technology [NJUST] in Nanjing, capital of east China's Jiangsu Province, March 24, 2013. The NJUST opened to public to celebrate its 60th anniversary Sunday. The weapon museum collects about 6,000 weapons since the First World War. [Xinhua/Wang Xin]