Wang Dong is so infatuated by My Love from the Star, a smash hit TV drama from South Korea, that the 24-year-old finds waiting a week for two new episodes torture.

"I'm so fond of the charming young hero. I have changed all the wallpaper on my phone and laptop to his picture," says the postgraduate student in Beijing. Wang has set up a fan group with 20 other girls in her class to gossip about the series through the mobile app WeChat.

Wang is just one of a growing army of fans who have fallen in love with new TV imports they watch online. Domestic online video firms are scrambling to secure rights to broadcast foreign TV shows.

It is not only South Korean TV. Western series are also immensely popular in China. The new season of the US political drama House of Cards is drawing legions of online viewers with its China-focused plot lines that touch on the escalating tension between China and Japan in the East China Sea.

The second season of the political drama premiered on Feb 14 on Netflix in the United States and on Sohu.com in China. It is the most-watched US television show on Sohu, with more than 19 million views as of Feb 22.

Watching TV imports online has become indispensable entertainment for a large number of young people in China. Originally, the desire to learn foreign languages prompted a few people to watch imported TV, but things are very different today.

"It's not just for fun. Watching American TV shows is a great way to understand culture and politics, too," says Su Zhou, 26, an editor based in Beijing.