And the most famous dish in the capital is named after it: the Peking roast duck, a dish said to be first written into a recipe book in 1330 by Hu Sihui, an inspector of the imperial kitchens when the capital of China was in the city of Nanjing.

BBC: The melting pot of Chinese cuisine

But they come to this city, once the capital of China, because they are able to earn enough to send a few yuan home to families still in the countryside.

FORBES: Chongqing: China's Lab Experiment In Urbanization

It's a rather nondescript city, the capital of Anhui province in the rice belt of central China.

NPR: China Seeks Cheaper Labor Within Its Borders

The plant is located outside the city of Dehui, about 800 kilometers (500 miles) northeast of China's capital, Beijing.

NPR: Fire Kills 119 At Poultry Plant In Northeast China