Assuming you mean HKG (not "hfk") then you will need to check which gate your Manila flight is going from - it could be adjacent to where you arrived or at the other end of the terminal. Then you need to ask (or look at a map) to find the most appropriate transfer point between the arrivals and departures levels. And then you may need to take the train (not a monorail, by the way) if you need to get to the other end of the terminal, although you always have the option of walking.