I live in South Korea, but my visa is extended for 6 months only, can I get a visa to China for attending a conference?

I am a foreigner who studies in South Korea, but my visa is extended for 6 months only every time, and after extension it takes few days to reach me, so basically i will have less than 6 months in my visa. Please advice me about the possibility of going to china to attend a conference with less than 6 month visa.