网虫 (wǎngchóng) People who always surf the internet
The character “网 (wǎng)” means net and “虫 (chóng)” means insect or worm.
Example:
Suízhe hùliánwǎng de fēisù fāzhǎn, xiànzài wǎngchóng yuèláiyuèduō le.
随着互联网的飞速发展,现在网虫越来越多了
With the rapid development of the Internet, there are more and more people who surf the internet from dawn till dusk nowadays.