Hi,
I am a Pakistani citizen. I am currently studying in Korea on official passport. It was noted from the embassy website that the Pakistani officials are exempted to stamp a visa.

I want to attend a conference in July, 2010. But I will travel from Korea. Do I still exempt to take any visa for this short visit on official passport of Pakistan?
Furthermore, validity of my passport is until October 9, 2010. It means, my passport will be valid for 2 months and some days when I will be traveling to China for 3 to 4 days. Is it ok or I need to renew it before travel?

Please help