Finding Loo Sing is very simple. After going onto the rooftops, there should be a zoom-around that shows a botanical area. Run over there and climb up onto it, go through the mini maze and Loo Sing should be there. Contact if this helps!
PS. He will give you the password to enter Lao Che's Lounge
Many people ask...' How do I do blahblahblah Staff of Kings? ' If anyone wants my attention, all they need talk about is the greatest archaeologist of all time. In short, Staff of Kings is about the hunt for the infamous Staff of Moses. If anyone has a question concerning 'Staff of Kings' please post and I'll get to your questions ASAP.