Original form of FlyingStar is PurpleWhite PW 紫白诀. It can be applied to point-block apartments with limitation. It does not rely on facing and sitting. In fact, stars don’t fly. They lean – Leaning Star. This method is one of the three most potent methods in XuanKong 玄空 XK comprising – Receiving Yin Pushing Shah 收山出煞, Arranging Dragons 排龍 and Castle Gate 城門.
Missing corners are dealt with XK predictive capabilities. It utilizes the Later Heaven trigram to predict its outcome. If a missing sector is in Northeast, there is an ugly structure in Southwest, it portends no affinity with children that may due to mother’s womb. It is unlikely for the couple to have children. It is done by matching numeral, energy and imagery. It doesn't really matter if both married couples have incompatible Life Gua and they can sleep together in any room regardless of its star combination.
PW, does not matter with period 8 or 7. So, no need to stress over if your house is period 7. Timeliness in PW is not measured by the period star so are the 5 yellow turning malignant. It employs SanYuan 三元 calibration to deal with annual afflictions. Its replacement star is the most sought-after in XK DaGua 玄空先天64卦, very few knew its joint-application.
PW employs Grid to obtain the chart and Pie to determine direction. Star combinations are dealt in Ode to Mysticism (玄机赋). The real application is not to chase after stars and the key to XK is to fix a palace and the rest of the malignant stars turn benevolent.
玄空 XK is a splinter school of SanYuan having its root in QiMen 奇門 and DunJia 遁甲 is only one of it. Many schools is offering to teach XK yet not many teacher understand its application. Just aware what you are paying for.