Can Korean get a China visa while travelling in Malaysia?

I am a Korean, staying in China with a singular travel visa, and I'm plannin to visit Malaysia during Chinese New Year. As far as I understand, Koreans don't need visa to visit Malaysia up to 90 days. But after my trip to Malaysia (4-5days), I have to come back to China. And I am concerned that processing visa procedure can take a long time and be complicated in the 3rd country. (Since I am a Korean trying to get a visa to China in Malaysia.) Is there any simplier and quicker way I can solve this problem?