Is the wing higher than the main hall?

Hello, it won't affect. In ancient times, one house lived in the elder or master of the family, and the second house lived in the younger generation or servant. In this case, the wing room is generally slightly lower than the main house, but not much lower, generally about half a meter. From the perspective of geomantic omen, half a meter low or even or half a meter high will not have any influence on the geomantic omen of the house. But if there is a big difference, it will have an impact, but this will not happen in real life. I hope my answer is helpful to you.