Feng shui ornaments: the orientation of the faucet

In the figure of Feng Shui Dragon, the faucet is inward and outward. Where does this inward and outward refer to the faucet (that is, how to look inward and outward)?

Inside and outside the house refers to inside and outside the house, such as inside and outside the house door, inside and outside the balcony, inside and outside the window, etc.