A total of 620,000 Chinese websites were launched last year, exceeding the number of sites launched during the 2010-2014 period, according to a report released by the Internet Society of China.
Of the 4.27 million websites, 3.02 million were operated by companies, up 493,000 from one year earlier. Around one million websites were run by individuals, representing an increase of 110,000 from 2014, the report said.
Average mobile internet traffic by Chinese netizens exceeded 366.5 megabytes per month in 2015, up 85.3 percent year on year.
China boasts the world's largest 4G network and has more 4G users than any other country.
China built 922,000 4G base stations last year, bringing the total number to 1.77 million, data from the ministry of industry and information technology showed.
The number of 4G users jumped to 386 million at the end of 2015, compared with 289 million at the end of 2014.