What's the point of putting stone lions at the gate?

1. Location: The stone lion should be placed in the northwest, and its head must be outside the house. 2. Placement quantity: Stone lions must be placed in pairs ... 3. As a kind of architectural decoration, stone lions are mostly used at the entrance of palaces, temples, yamen (ancient government agencies) and the residences of senior officials, nobles and wealthy businessmen. In modern times, stone lions are usually placed in front of some shops.