Thanks so much for the response! I think I am getting in now. To start with the analysis,I need to start first with the house: 1. the land forms 2 gua/kua 3. the flying stars. So, when I am looking for a house or apartment, I am looking first for an optimal location, then I check if the house has aoptimalflying stars chart, and then I check how it corresponds with my personal gua/kua number (and with other family members). BaZi comes in later in the analysis, I guess. And as you said, there a big chance for it to be incorrect as not too many people know their birth time, or sometime even the date. Please let me know if I am getting it correctly. Larissa PS. I am so glad I found this forum as I have been studying feng shui on my own for a while now. And as you can see, it can get very confusing! Thank you very much for your support .