China Mobile says its 4g network will be 20 times faster than 3g networks, plus provide high-definition video broadcasts, remote monitoring and high-speed Internet access.

When Youku, China's largest online-video company, listed its shares on December 8th its stock jumped by 161%, the biggest gain by a newcomer to the NYSE for five years.

In April, China began a campaign to "clean up" the Internet that saw popular US TV shows such as the Big Bang Theory and the Good Wife removed from video streaming sites.