How long does it take to get Hong Kong visa?

I am from Nepal, I applied for single entry HongKong one yesterday at Chinese embassy Kuala Lumpur. I need to attend training in Hong Kong which I paid for already (850USD). My travel dates are 8-14 Mar, tickets are booked. Is it possible for me to get one before 6th Mar, Friday? I am really getting anxious as I will be losing a lot of money if it doesn't arrive on time.
P.S. I travelled Hong Kong as a tourist in 2003 for a week.