More than 2,000 police officers take part in anti-crime exercises before the 18th National Congress of the Communist Party of China, in Zhengzhou city, capital of Central China's Henan province, Oct 30, 2012. [Photos/Asianewsphoto]

Visitors play at an Angry Birds outdoor theme park in Shanghai, east China, Oct 31, 2012. The theme park, which is located in Tongji University, covers an area of about 200 square meters. [Photo/Xinhua]