China’s thirteenth largest city, according to Wikipedia (here), is Chengdu, with 6.7 million people. For comparison, the largest US City, New York, has 8 million people. Los Angeles, second in the US, has 3.7 million, Chicago, in third, has 2.6 million, and Portland at 29th has 583,776 (here).
From Wikipedia (here):
Chengdu (Chinese: 成都; Sichuanese: Cen2du1; pinyin: Chéngdū), formerly transliterated Chengtu, is the capital of Sichuan province in Southwest China. It holds sub-provincial administrative status. The urban area houses 14,047,625 inhabitants (2010 census: 7,123,697) within the municipality's nine districts and 6,730,749 in the surrounding region.
Chengdu is one of the most important economic, transportation, and communication centers in Western China. According to the 2007 Public Appraisal for Best Chinese Cities for Investment, Chengdu was chosen as one of the top ten cities to invest in out of a total of 280 urban centers in China. It was recently named China's 4th-most livable city by China Daily.
The fertile Chengdu Plain, on which Chengdu is located, is also known as the "Country of Heaven,” a phrase also often translated as "The Land of Abundance". The discovery of the Jinsha site suggests the area of Chengdu had become the center of the bronze age Sanxingdui culture around the time of the establishment of the state of Shu, prior to its annexation by Qin in 316 BC.
There are three parts to the Andrew Zimmern video above. You can view all three.