Question: Chongqing and Zhenjiang are both cities in which country?
Context: The Xiangyang–Chongqing Railway or Xiangyu Railway (襄渝铁路), also known as the Xiangfan-Chongqing Railway and Xiangyu Line (襄渝线), is a single-track electrified railroad in central China between the cities of Xiangyang, formerly known as Xiangfan, and Chongqing.  The short form name for Chongqing is Yu (渝) and the railway is named after the two cities.  It has a total length of 895.3 km and passes through Hubei, Shaanxi and Sichuan province, and Chongqing municipality.  Major cities along route include Shiyan, Ankang, Dazhou and Guang'an. Chongqing (), formerly transliterated as Chungking , is a major city in southwest China.  Administratively, it is one of China's four direct-controlled municipalities (the other three are Beijing, Shanghai and Tianjin), and the only such municipality in China located far away from the coast. Chengdu–Chongqing Railway or Chengyu Railway (), is a single-track, electrified, railroad in the Sichuan Basin of Southwest China between the cities Chengdu and Chongqing.  Chongqing's short form name is Yu (渝) and the railway is named after the two cities.  The line has a total length of 505 km . The Shanghai–Chongqing Expressway (), commonly referred to as the "Huyu Expressway" () is an east-west bound expressway that connects the cities of Shanghai, China in Yangtze River Delta, and Chongqing in western China.  The expressway runs through six provinces/municipalities and adjoin major cities such as Wuhu, Anqing, Wuhan and Yichang, roughly parallel to G42 Shanghai-Chengdu Expressway to its south.  The thoroughfare begins at Huqingping Outer Ring Interchange near Hongqiao International Airport, where it meets S20 Outer Ring Expressway in Shanghai, and terminates at an interchange in Jiangbei District, where the highway joins G75 Lanzhou-Haikou Expressway.  It is fully complete and spans 1900 km in length. Wanzhou Railway Station is the western terminus of the Yichang−Wanzhou Railway in Wanzhou, Chongqing.  This is a branch off the Shanghai–Wuhan–Chengdu High-Speed Railway, with most services divert south to Chongqing on the Yuli Railway at Lichuan.  High-speed rail services are available to eastern destinations in neighbouring Hebei province and beyond.  Major destinations being Wuhan and Yichang.  Conventional rail connections extend to the west, to Dazhou and beyond to Chengdu and other Sichuan cities via the Dacheng Railway and Chongqing via the Xiangyu Railway.  The station was opened to high-speed traffic on December 22, 2010. The Chengdu–Chongqing Intercity Railway () is a 307 km long high-speed railway that connects the cities of Chengdu (Sichuan) and Chongqing in southwestern China, with a maximum speed of 350 km/h.  The route passes through most of the same cities that the older Chengdu–Chongqing Railway does, but is significantly shorter due to the greater use of elevated sections and tunnels.  It reduces travel time between Chengdu and Chongqing to 75 minutes, 45 minutes quicker than the current CRH route via Suining.  The line includes four major elevated sections and two tunnels. Zhenjiang, formerly romanized as Chenkiang, is a prefecture-level city in Jiangsu Province, China.  It lies on the southern bank of the Yangtze River near its intersection with the Grand Canal.  It is opposite Yangzhou (to its north) and between Nanjing (to its west) and Changzhou (to its east).  Zhenjiang was formerly the provincial capital of Jiangsu and remains as an important transportation hub. The Chongqing–Chengdu Expressway (), commonly referred to as the "Yurong Expressway" () and designated G50, is a partially completed 251 km that connects the cities of Chongqing and Chengdu.  The Chongqing section of the expressway opened on 25 December 2013. Chongqing–Huaihua Railway or Yuhuai Railway (), is a single-track, electrified railroad in southwest China between Chongqing Municipality and Huaihua in Hunan Province.  The line is 624.5 km long and was built between 2000 and 2005.  Cities and towns along route include Changshou, Fuling, Wulong, Pengshui, Qianjiang, Youyang Tujia and Miao Autonomous County, Xiushan, Songtao in Chongqing Municipality, Tongren in Guizhou Province and Huaihua in Hunan Province. The West Triangle Economic Zone is an economic zone designated by the Chinese government comprising Chengdu, Chongqing and Xi'an.  Created as part of China's Western Development strategy, the West Triangle Economic Zone contributes nearly 40% of Western China's GDP.  Furthermore, Chongqing is one of China's five National Central Cities, while both Chengdu and Xi'an are Regional Central Cities.
Answer: China