As for the white tiger and the green dragon, this sentence means "some people are poor for generations", which reflects the importance of living location. According to this matter, it is also based on people's accumulated experience in building houses. Because in ancient times, people were very particular about Feng Shui, and they would definitely look at the geographical location before building it. The ancient economy didn't develop as fast as we do now, so people needed adequate food and clothing.
For people with well-off families, when building a house, they will ask Feng Shui master to help them see the geographical location of the house. For feng shui masters, they will advise the owners of these houses to build their houses with good lighting, and it is a pattern of east dragons and west tigers. Because it can protect your house.
This is because the sun rises in the east and sets in the west, so in ancient times, people thought that houses in the east would be better, with yang and good luck. In ancient times, seniority was very important, so the house in the east would be given to the boss of the family. That's why there are TV plays. There will be a big fight between brothers, which will be very unpleasant.
White tiger and Qinglong are the mythical beasts in our fairy tales. When we see the quadrangles in Beijing, there are houses in all directions, but the houses in the east will definitely be higher than those in the west. Never let the surrounding houses overshadow the houses in the east, or you will have bad luck.
Not only in ancient times until now, for us, everyone wants good things and good luck. Although there are very few people building houses now, people who stay in the city live in buildings, so they have paid little attention to the geomantic omen of building houses.