Geomantic omen on the fifteenth day of the twelfth lunar month.

Let me tell you first, no matter how you choose Feng Shui. 18 floor should be considered as a small high-rise building. Don't choose the one below 6 floors, which is light-blocking and depressing. The floor around 10 is ok, but there is this dust belt in big cities, so it doesn't matter in small cities or mountainous areas. 13, 14, 18 are all unlucky numbers, especially 18, which is hard to sell. Your 18 is still the top floor, so you can't have it. 17 is not good either. Some will be affected by the elevator motor, and the noise is too high. 15 and 16 are a little high, so choose a lower one if you don't block the light. You can choose the remaining 12, 1 1, 10, or 9 or 8 floors lower.

Don't trust Feng Shui too much. Feng shui is a reference.