alien registration card in South Korea (ARC) less than 6 months remaining validity

I'm a swedish currently living in South Korea. Then we are planning to go to Beijing for only 5 days this november but unfortunately I will have less than 6 months on my ARC. Is there any options you can give me? I really wanna go to China. My alien card is valid from 2013-08-26 until 2014-03-26. Thank you for your consideration.