how can i process my visa? i am an iraqi nationality. i will only travel in HK for 5 days

1.You can submit application forms together with the relevant supporting documents and travel documents in person to the Chinese embassy or consulate which has consular jurisdiction over your place of domicile. or
2.You can also apply from the Immigration Department of the HKSAR in HongKong by post,the detailed address is as following:
Receipt and Despatch Unit
Hong Kong Immigration Department
2/F, Immigration Tower
7 Gloucester Road
Wan Chai, Hong Kong