I am a Korean who recently toured Shanghai area and have a plan to tour China again. I am working in Qatar with residence perimit.
My routes will be "Doha --> China (4~5 days tour) --> Korea --> Doha"

I have the following documents:
a. Valid passport till the year of 2018.
b. a completely filled visa application form affixed with a visa-sized photo.
c. Your Qatar residence permit.

Please let me informed
1) what kinds of extra document are required for my visa application, (Maybe, Leaving Air ticket to Korea and Hotel voucher)
2) its issuance charge (in QAR),
3) expected time of issuance (4 working days)
4) and VISA validity.

Thanks