I bought a house in a residential area online, such as Dream Journey to the West. What is the basis of geomantic omen in different communities? Can I change it?

The house has geomantic omen, which is manifested in the deed: from bad to good, the water is dry and sleepy, the wind is fierce and the fire is different, the family is smooth, the house is blessed, and the purple gas comes from the east. The geomantic omen of the house seems to have little influence on the use, but the grade of the house has a greater influence on the use. For example, pet rooms are divided into 1 2 3 grades, and the higher the grade, the better the use effect. And the community only has land. If you want to buy land, you should first have a home in Chang 'an, and then apply for moving into the community from the building collector. The characteristics of community land include increasing the experience of summoning animals, increasing pasture feed, increasing the number of breaks and increasing the upper limit of money storage. There is no geomantic omen in the residential land, and the characteristics of the land cannot be modified. Ask me if you don't understand.