Question: Which city is more populous, Liaoyang or Changchun?

Context paragraphs:
St. Theresa's Cathedral, Changchun: St. Theresa's Cathedral of Changchun (in ) is a Roman Catholic cathedral in Changchun, Jilin Province, China.  It is also called Changchun City Catholic Church or St. Theresa's Diocesan Cathedral () in Changchun because the bishop of Jilin Diocese moved here in 1994, from Sacred Heart of Jesus Cathedral of Jilin City.

Changchun Film Festival: The Changchun Film Festival is a biennial international film festival held in the Chinese city of Changchun.  Ostensibly international, its award for best film, the Golden Deer has nevertheless primarily been awarded to Chinese and other East Asia-region films.  It was first held in 1992 and was founded in part by the Changchun Film Studio (now the Changchun Film Studio Group Corporation).

Battle of Liaoyang: The Battle of Liaoyang (遼陽会戦 , Ryōyō-kaisen , 25 August – 3 September 1904) (Russian: Сражение при Ляояне ) was the first major land battle of the Russo-Japanese War, on the outskirts of the city of Liaoyang in present-day Liaoning Province, China.  The city was of great strategic importance as the major Russian military center for southern Manchuria, and a major population center on the main line on the South Manchurian Railway connecting Port Arthur with Mukden.  The city was fortified by the Imperial Russian Army with three lines of fortifications.

Changchun: Changchun () is the capital and largest city of Jilin Province, and is located in the northeast of China.  Lying in the center of the Songliao Plain, Changchun is administered as a , comprising 7 districts, 1 county and 2 county-level cities.  According to the 2010 census of China, Changchun had a total population of 7,674,439 under its jurisdiction.  The city's urbanized ("or metro") area, comprising 5 districts and 4 development areas, had a population of 3,815,270 in 2010 as the Shuangyang and Jiutai districts are not urbanized yet.

Changchun Longjia International Airport: Changchun Longjia International Airport (IATA: CGQ, ICAO: ZYCC) is an international airport in Jilin Province, China, for which it is an aviation hub in China's Civil Airport System.  The airport is 31.2 km north-east of provincial capital Changchun and 76 km north-west of Jilin City: responsibility for the operation of the airport is shared by both cities.  Changchun Airport is a regional hub for China Southern Airlines.

Liaoyang County: Liaoyang County () is a county in east-central Liaoning province of Northeast China.  It is under the administration of Liaoyang City, located in between the urban area of Liaoyang City and Anshan City.

Shengjing Bank: Shengjing Bank (in ) is a commercial bank, with its headquarters in Shenyang, Liaoning Province, China.  It was established in 1996 as Shenyang City Commercial Bank and opened in Shenyang City only.  It changed its name to Shengjing Bank in 2007 and has since opened a branch in Beijing, Tianjin, Dalian, Yingkou, Huludao, Shanghai, Anshan, Changchun, Benxi, Panjin, Chaoyang, Fushun, Jinzhou, Fuxin, Dandong and Liaoyang.

Liaoyang: Liaoyang () is a prefecture-level city of east-central Liaoning province, People's Republic of China, situated on the T'ai-tzu River and, together with Anshan, forms a metro area of 2,057,200 inhabitants in 2010.  It is approximately one hour south of Shenyang, the provincial capital, by car.  Liaoyang is home to Liaoning University's College of Foreign Studies and a number of vocational colleges.  The city hosts a limited number of professional basketball and volleyball games in a modern sports facility.

Battle of Tashihchiao: The Battle of Tashihchiao (大石橋の戦い , Taisekihashi no Tatakai ) was a land engagement fought on 24–25 July 1904, during the Imperial Japanese Army's advance toward Liaoyang in first stage of the Russo-Japanese War.  Tashihchiao (modern Dashiqiao) is located about 25 km southwest of the city of Haicheng, in present-day Liaoning Province, China.  The town of Tashihchiao was of strategic importance in the Russo-Japanese War, as it was a railroad junction between the main line on the South Manchurian Railway and a spur which led to the old treaty port of Yingkou (Newchwang).  Control of both was essential for further advances by Japanese forces towards Liaoyang and Mukden.

Changchun Subway: Changchun Subway or Changchun Rail Transit is rail mass transit system in the city of Changchun, Jilin province, China.  Its first line, Line 3, is the first true light rail line in Mainland China.  The initial phase of Line 3 was completed in 2001, the 2nd phase was completed in 2006.  It officially opened to revenue service in October 2002.  The current total length of the route is 50.63 km with 49 stations.  4 sections of 4 Lines are under construction.

Supporting paragraphs: Liaoyang Changchun
Answer: Changchun