Xuan Kong (玄空) – By the time practitioner dwells into Xuan Kong Liu Fa (玄空六法) would have been well verse what is Xuan Kong. This factor basically means where is your Taiji (太極)；man as the focal point (人為立極，無人無太極).
Ci Xiong (雌雄) – Essentially means deciphering the environment Yin from Yang, motion from stillness (雌雄、陰陽、動靜).
Jin Long (金龙) – The period by which the property is in. Is the period dragon in power or not.
Ai Xing (挨星) – The Gua Qi (卦氣) by which the property can make use of. This factor along with Jin Long (金龙) and make or break the household. Whether the property is in period and receiving good Qi (氣). I use receiving instead of riding because in Qi (氣) Yang House receive Yin House ride. In layman application, the practitioner after deciding where the main period is, the practitioner would choose a facing 9、8、7、6 for the current period 9.
Cheng Men (城门) – Where to place the main door. This factor is rather subjective. Many authors in chinese books focus on opening door at 1、2、3、4 which are the water sector (零神). I personally make use of Ai Xing (挨星) concept to get the door in the direction of receiving good Qi (氣).
Tai Sui (太岁) – This fundamentally reclassified the 24 Mountain into 12 sectors for annual affliction analysis.
In summary, this is Xuan Kong Liu Fa (玄空六法) in a nutshell. Nothing mystical about it. It is basically an approach to understand Qi (氣) application. If practitioner is using this methodology, make sure the concept of Jin Long (金龙) and Ai Xing (挨星) is sufficiently grasp.