Dear Master Cecil: I intend to plot in the House Gua and Flying Stars ( both natal and monthly charts ) for my apartment unit. So far, I have done the following: a) Extend the lines to form a square / box b) Draw the 9 Palaces Grid over the floor plan c) Cross the diagonal points to determine the center of the unit. But before I can plot in the numbers, I need to be able to determine which box belongs to which compass direction. So I stand in the center to take a compass direction. The attached plan has all the information. Now the problem is North ( as in 0 degrees North ) is so close to 2 of the palaces, thus making me confused ( By the way, the Facing is not North. I am just trying to confirm North belongs to which Palace so I can plot in the direction for the remaining boxes. ) Can you help me on the following: 1) According to my attached plan, should North Palace be the Top Left Box or the Top Center Box? 2) Should I encounter such cases again, how should I determine the North palace should be in which box. Any guidelines? 3) Once I have plot in the N, S, E, W, NE, NW, SE and SW into the boxes, this layout will be the same when I apply 8 Mansions House Gua or Flying Stars right? Thank you, Ivan