The Nanjing–Xian Railway or Ningxi Railway (), is a major trunkline railroad in China between Nanjing, the capital of Jiangsu Province and Xi'an, the capital of Shaanxi Province.
 The Chinese name for the line, Ningxi, is named after the two terminal cities, "Ning", the Chinese character shorthand for the city of Nanjing, and "Xi" for Xian.
 The line is 1,196 km in length and comprises the Xi’an-Hefei section in the west, 1,196 km in length, that opened on January 7, 2004, and the high-speed Hefei-Nanjing section in the east, better known as the Hefei–Nanjing Passenger Railway, 166 km in length, that opened on April 18, 2008.
 In addition, a connection line 72 km in length was built in 2004 between the main line in Sui County and the Hankou–Danjiangkou Railway in northern Hubei.
 The Ningxi Railway passes through five provinces in central and eastern China.
 Major cities along route include Nanjing and Pukou in Jiangsu Province; Feidong, Hefei and Lu'an in Anhui Province; Huangchuan, Xinyang, Nanyang and Xixia County in Henan Province and Shangluo, Weinan and Xian in Shaanxi Province.
 The main line skirts Hubei Province near Sui County.
Nanjing (  ), formerly romanized as Nanking and Nankin, is a city situated in the heartland of the lower Yangtze River region in China, which has long been a major centre of culture, education, research, politics, economy, transport networks and tourism.
 It is the capital city of Jiangsu province of People's Republic of China and the second largest city in the east China region, with an area of 6600 km2 and a total population of 10,230,000.
 The inner area of Nanjing enclosed by the city wall is Nanjing City (南京城), with an area of 55 km, while the Nanjing Metropolitan Region includes surrounding cities and areas, covering over 60 thousand square kilometres, with a population of over 30 million.
Jiangcheng Hani and Yi Autonomous County () is an autonomous county under the jurisdiction of Pu'er City, in southern Yunnan, China, bordering Laos and Vietnam to the south, making it the only county in the province to border more than one country.
 By road, its seat, the town of Menglie (勐烈镇 ), is 520 km from Kunming and 145 km from Simao District, the municipal seat of Pu'er.
Suzhou Experimental High School,officially the Suzhou Experimental High School of Jiangsu Province (simplified Chinese: 江苏省苏州实验中学;traditional Chinese: 江蘇省蘇州實驗中學; pinyin:Jiāngsū shěng Sūzhōu shíyàn zhōngxué) is located in Suzhou, Jiangsu Province, China.
 It was founded in 1994,have taken the official name of "Nanjing University Affiliated High School in Suzhou" (simplified chinese 南京大学苏州附属中学）since 1996.
The school become the key high schools in Jiangsu province in 1996.
The school has modern teaching equipment,The school was rebuilt at 2016.
It has more than 1600 students and 160 faculty.
Wuxi No.1 High School () is located in Wuxi, Jiangsu Province, People's Republic of China (PRC).
 The school was built up in 1911 and famous for the high-quality education.It was called'Five Charming Roses among the High Schools in Jiangsu' with other four school which was High School Affiliated to Nanjing Normal University，Suzhou High School, Nantong Middle School of Jiangsu Province and Changzhou High School.
Wuxi No.1 High School is the seventh best school in Jiangsu Province(The data from Chinese National Higher Education Entrance Examination).
 The gist of Wuxi No.1 High School is to let students enjoy the school, encourage students to create new things and learn from playing.The principal of Wuxi No.1 High School now is Zhou Jingzhong.
Nanjing Road (; Shanghainese: "Nuecin Lu") is the main shopping street of Shanghai, China, and is one of the world's busiest shopping streets.
 The street is named after the city of Nanjing, capital of Jiangsu province neighbouring Shanghai.
 Today's Nanjing Road comprises two sections, Nanjing Road East and Nanjing Road West.
 In some contexts, "Nanjing Road" refers only to what was pre-1945 Nanjing Road, today's Nanjing Road East, which is largely pedestrianised.
 Before the adoption of the pinyin romanisation in the 1950s, its name was rendered as Nanking Road in English.
Jinling Library () is a Nanjing Municipal Library, founded in 1927, located at the former Pingjiangfu Chapel.
 Originally, it was called Nanjing Special (No.1) Popular Library.
 In 1928, it changed its name into Nanjing No.1 Municipal Library, and in 1930 to Nanjing Special Municipal Demotic Library.
 It was then moved to the Pan Palace.
 Jinling Library merged with the Domestic Science Museum in 1932 and was renamed as Nanjing Municipal Library the following year.
 On December 13, 1932 , after the Japanese troops took over Nanjing, the Pan Palace, together with the library, was badly damaged and most of the books were destroyed.
 In 1952, Nanjing was demoted from the national capital to the capital of Jiangsu Province.
 Six years later, the Municipal Government decided to reestablish the library.
 In October 1980, the library was completed and open to the public at 262 Changjiang Road.
 The new pavilion had been constructed since 2005 and was open for trial in 2009.
 Jinling Library, with a total of two million books, is now located at 158 Leshan Road, Jianye District.
Pu'er () is a prefecture-level city in southern Yunnan Province, China.
 The name Pu'er dates back to 1729, but was changed to Simao () in 1950 after the Communist Revolution.
 In 2007, the original name of Pu'er was restored.
 This change had an effect on the size of the official Pu'er tea production area, a major regional product.
 The urban administrative center of Pu'er is Simao District, which is also the former name of the prefecture-level city itself.
 A major downturn in the price of tea in 2007 caused severe economic distress in the area.
 The price of Pu'er has since recovered and Pu'er tea still contributes much to the income of the area.
Nanjing was the name for Beijing during the Liao dynasty, when Khitan rulers made the city the southern capital.
 To distinguish "Nanjing", which literally means "South Capital" in Chinese, from modern Nanjing in Jiangsu Province, Chinese historians sometimes refer to Beijing during the Liao dynasty as Liao Nanjing ().
 The Khitan rulers of the Liao acquired the city, then known as Youzhou, in the cession of the Sixteen Prefectures in 938 from the Later Jin, and the city was officially renamed Nanjing, Youdu Fu (南京幽都府).
 In 1012, the city was renamed Nanjing, Xijin Fu (南京析津府).
 The city was also colloquially referred to at the time as Yanjing.
 In 1122, the city was captured by the Jurchen Jin dynasty and was officially renamed Yanjing, ending the use of Nanjing for what is today modern Beijing.
Nanjing Iron and Steel Group Corp., Ltd. is a Chinese conglomerate company based in Nanjing, Jiangsu Province, China.
 It was a state-owned enterprise, but now it is a joint venture of Nanjing Iron and Steel Venture Investment (, about 36.07% owned by the worker union of Nanjing Iron and Steel Group) and state-owned enterprise Nanjing New Industrialization Investment Group in a 51–49 ratio.
 Nanjing Iron and Steel Group formed another joint venture with Fosun International as an intermediate holding company of Nanjing Iron and Steel Company, in a 60–40 ratio.
 On 31 December 2015 Fosun International appointed Nanjing Iron and Steel Group as a proxy for 1/6 of their voting rights, making the voting rights were equally shared between Nanjing Iron and Steel Group and Fosun International after 31 December 2015.

Question: Which Chinese city is the capital of the Jiangsu province, Nanjing or Pu'er City
Answer: Nanjing