China ranked second after the United States in an internet development index released on Monday that gauges six dimensions from internet infrastructure to application among 38 countries.

China has the largest number of internet users and is the world's top e-commerce and mobile payment market by transaction volume, according to the Global Internet Development Index, published during the 4th World Internet Conference in Wuzhen, Zhejiang province.

The findings are part of the World Internet Development Report 2017, the first such industry index China has compiled as a world-leading digital force, said Yang Shuzhen, head of the Chinese Academy of Cyberspace Studies.