In traditional fung shui, the flow and shape of water (for example, a river) around a property is seen as exerting positive or negative effects as a constant flow equates to yang energy. In modern city living, roads have replaced waterways in their significance, so you should note the shape of roads in your building's vicinity. For instance, when a road curves, it's preferable to be on the inner, or embracing side, rather than the outer. When your building is on the embracing side, it is described in classical texts as being akin to wearing a jade belt around your waist, implying protection and prosperity. If your property is on the outside edge, it is exposed to sharp energy, resulting in adversity for the occupants. Because these features are structural, it's best to avoid moving into a home that suffers from them. You should also avoid buildings at the end of intersections or T-junctions, as you will be exposed to sharp incoming energy. Installing a solid barrier around the front entrance of the building will provide some protection. Some traditional fung shui masters use a solid rock inscribed with the face of a lion and calligraphy to control the incoming energy, but the surrounding architecture and the beliefs of the occupants also need to be considered.