General observations:- 1. Rough estimate is that most of the units are of Flying Star: Period 8, NE 1 or SW1. 2. Just be careful of sharp edges from another unit (stack). For example, stack 20; may have an edge or corner that is aimed towards stack 14 (perhaps a bedroom window) or vice versa. Stack 24 with 18. 3. As usual, best not to have afternoon sun soaking into master bedroom walls or thru windows of living, bedroom(s). 4. Again, club house roof fans out creating a sha qi particular