Chongqing, Chongqing Municipality, China

Specifically, the central urban area is located on a huge folding area (similar to the landscape of Appalachian Mountain in USA), and the Yuzhong District, Nan'an District, Shapingba District and Jiangbei District are located right on a big syncline. And the Southern Mountain of Chongqing (Tongluo Mountain) and the Zhongliang Mountain are two anticlines next to the syncline of downtown.
• Climate
Chongqing has a monsoon-influenced humid subtropical climate (Köppen Cfa), and for most of the year experiences very humid conditions. Known as one of the "Three Furnaces" of the Yangtze River, along with Wuhan and Nanjing, its summers are long and among the hottest and most humid in China, with highs of 33 to 34 °C (91 to 93 °F) in July and August in the urban area. Winters are short and somewhat mild, but damp and overcast. The city's location in the Sichuan Basin causes it to have one of the lowest annual sunshine totals nationally, at only 1,055 hours, lower than much of Northern Europe; the monthly percent possible sunshine in the city proper ranges from a mere 8% in December and January to 48% in August. Extreme temperatures of Chongqing central urban area have ranged from −1.8 to 43.0 °C (29 to 109 °F).
As exemplified by Youyang County below, conditions are often cooler in the southeast part of the municipality due to the higher elevations there.