The Gross Domestic Product (GDP) of Wuxi, East China's Jiangsu province, and Changsha, Central China's Hunan province, surpassed 1 trillion yuan ($15.8 billion) for the first time in 2017, bringing the number of cities in the trillion yuan GDP club to 14.

The 14 cities were Shanghai, Beijing, Shenzhen, Guangzhou, Chongqing, Tianjin, Suzhou, Chengdu, Wuhan, Hangzhou, Nanjing, Qingdao, Wuxi, and Changsha.

The overall GDP amount of these 14 cities was 24.02 trillion yuan, accounting for 29 percent of national GDP (82.71 trillion yuan) in 2017. The two new members joining the trillion yuan GDP club, Wuxi and Changsha, had a GDP of 1.05 and 1.02 trillion yuan, respectively.

There are two cities in the west and two in central China among the 14 cities, while the other 10 are in eastern China.

Shanghai became the first city whose GDP exceeded 3 trillion yuan. Shenzhen outnumbered Guangzhou for the first time, and Chongqing made itself the first western city among the top five by replacing Tianjin.

Apart from the four municipalities (Beijing, Shanghai, Tianjin and Chongqing), the other 10 cities contributed to their own provinces' GDP by 23.74 percent on average. Chengdu in Sichuan province and Wuhan in Hubei province contributed more than one-third to their own provinces by 37.56 percent and 36.68 percent, respectively.

The GDP growth rate of these trillion yuan-GDP cities all surpassed the national GDP growth rate average level, among which Chongqing had the highest growth rate, 9.3 percent.

According to the data released by the National Bureau of Statistics, China's national GDP in 2017 was 82.71 trillion yuan, an increase by a growth rate of 6.9 percent than in 2016. This was the first time China reached a GDP over 80 trillion yuan.