風水房屋坐向怎麼看？坐向怎麼看 ?房屋坐向怎麼看?如何看房子的坐向？

以上問題，定坐立向在玄空飛星風水學上，被視為一大課題，原因是未能夠弄清楚其法。縱使其他學理清楚明白，亦屬枉然。簡單來說，因為不能明其學理，就是不能起出正確之飛星盤。對初學者而言，定坐立向就是門向，看似簡單，其實未然。其間所含之學理，錯綜複雜，衹有從其基礎着手，方能領會。

何者為屋？有屋頂，四面牆壁，有門，有地基便為屋。此為建成房屋之基本條件。所以謂，如果缺其一者，便不能稱之為屋。例如少了屋頂，剩下的牆壁會變成圍牆；少了牆壁，剩下的屋頂和地基會變成亭台等。成屋及不成屋對玄空風水學極為重要，因為夠條件成屋者，才能得以納氣。其房屋才有風水之產生。

‘坐’者 即為背  /  ’向’者 即為面

所謂有背即有面，有坐必有向。兩者關係必為一百八十度。在二十四山向盤上，向者必為坐者之對待。但在房屋之真實建築中，很多時候在門之對待未必是屋之牆壁，有可能是窗，亦可能是後門等。在風水學理上，亦為坐為背也。

門為納氣口

風水學上理氣口訣之「隨地而行」，說明了風水之理氣是在地面流動的，它行經新建成房屋的缺口時，即門，進入屋內，再流走八方。此行為對房屋而言，是為納氣。而納氣之過程，房屋大門便扮演了一個很重要的角色。由此推斷，沒有門之建築物，理氣不能使它納氣，又衹有門而沒有建築物，像離笆，圍牆等，亦是沒有納氣的機會。

門向

風水理氣入屋而流走八方，像前段所述，缺了屋頂或缺了牆璧的房屋，便不能順利納得理氣了。而門向之角度，便絕對地影響了所納得理氣之好壞。像門向之一百三十五度，便跟一百四十度，會產生了很大的差異。

屋之納氣

風水理氣流走入房屋後，便在房屋之中心點立極而靜，從中心點再放射宅內八方。除非房屋之陽基形狀日後有所改變，要不然，一般之立極中心點不會輕易被移動的。然這房屋便已立極納氣，所以在這已納氣的空間內的再建空間，像房屋內的房間，浴室等，是不會重新納氣成其他卦盤的。

大立極與小立極

試想一下，如在房屋內有三，四個房間，其道理一樣，房門亦絕不會各自納氣的。房間內小立極所納得的理氣，亦即是房屋內大立極等同之理氣而已。房間內小立極之立極中心點，亦會因應房間之形狀，立極而靜，一樣不易被移動的。

樓層納氣

如此法理之伸延，當房屋加建二樓，二樓亦祇會跟隨一樓納得之理氣屬性，二樓本身之樓梯口，房門口是不會在已納氣的空間中，再自行納出他盤的。因為納氣過程已由地下一樓之大門在建成時完成，所以在一個空間內，不可能成立有兩個不同的理氣屬性的。

各種取向分析

現今家居立極

由以上古代建築，引伸到現今之房屋結構，無論它是三層之村屋，六層之洋樓，或超過十層以上的大廈。其納氣之條件，過程及道理，都為無異。故此，所有有形之建築物，衹要是同一結構內的，總是由大門來納氣。所以，以單位門來作定坐立向的方法，絕對為不正確。

單位立極

如果我們要知道在一幢大厦中的，其中一個單位之風水理氣星盤，便需要首先量度這幢大厦的大門方向，從而用這度數，起出飛星盤，再以同等之角度，引入這房屋單位之立極中心點，始來相宅佈局。

現今房屋建築結構遠比古時的房屋複雜，很多時候，在一些大厦式洋樓中，經常發覺不衹一個大門。有些情况是，除了正式之大門外，平台花園亦建有便門。另有些情况是，大門建在地面，但左右亦同時有二個不同方向之門。更有些情况是，大門衹建在平台花園，但在平台花園下之停車場，亦有大門出入。林林種種，不一而終。所以要斷何為正確之納氣大門，亦相當之不容易。

我們要知悉，大厦本身已然納氣，所得之卦氣已成，而且亦已立極。所以我們不要發現上述情况時，便胡亂斷之為「人多出入為納氣門」，「大小門當以大為向」等謬論。世人要知，建築物風水納氣過程是在建成時已發生，既定之理氣亦不會「人多行」，「大勝小」而改變的。風水上之門，亦不是人們所看到的門，所為研究風水之後學，請慎而重之。用納氣規則去斷何者為門為向，千萬不要每幢門都起一飛星盤，再詳問房屋中發生何事來斷，此種做法，實為正統玄空師傅所不恥。

乘氣之門

納得當時得令令星到門者，為乘氣之門。反之，納得衰敗之星到門者，為脫氣之門。玄空飛星重到門之星，亦即到門之卦氣也。斷宅時，故以本身單位門為重，但亦不能疏忽到本身大厦大門納得之卦氣。如單位門脫氣，大厦大門亦為脫氣，為凶。單位門乘氣，大厦大門脫氣，亦為不甚理想。最佳者，當然是單位門及大厦大門都同時乘氣，為玄空之吉局。

選旺而居

風水上的理氣是隨地而行，隨屋而附的。如大厦乘氣得旺，理氣會由大門流入，以大厦之陽基形狀，分八方而立極中央。卦氣星盤之旺氣不會胡亂奔走，它是按着原本卦氣星盤之方作流向。所以玄空之選局，以大厦星盤立極後之旺方為要。如單位坐落此方，便以此為選。反之，如衰謝之氣，即棄之不用。不過，世事多矛盾，坐落旺方之單位，多不能開立旺門。實為一大諷剌也。

門路氣路

玄空重門路所形成的氣路，得乘氣之門，旺氣入宅。那是否宅旺人就旺？其實未必。旺氣由門入，會跟星盤立極後之旺方流奔，佈局上必須順應旺氣流走之行徑而造。流行之氣該逸走何宮，該冲向何宮，那便需要精心佈局的配合，所謂冲起樂宮無價寶，請珍惜固有之局面，以免入寶山而空手回也。

To Determinate the orientation of a building

To determinate the sitting and facing direction of a building is a major subject. Accurate measurement of the orientation is essential for formulating a correct flying star chart for the building. To the beginners, the orientation of a building is often regarded as the direction that its entrance faces. However, the theory behind is more complex than this.

About vital breath (Qi)

Vital breath is referred to as Qi in feng shui. In ancient times, the sages believed that Qi travelled in breezes and it moved on ground. It could feel the objects it encountered. It would get attached to a house and affected the people there.

Qi travels in air, so there is variation in energy strength: being strong or weak. It creeps on ground, so it enables a house to receive Qi through the opening at its entrance. It can feel the surroundings, and landform arrangement can alter its energy. It can attach to a house and exerts its feng shui influence. It affects people. That is why people would care about it. In conclusion, Qi is the basis of feng shui.

What is a house?

A house is an enclosure that has a foundation, four walls with a door and a roof. These are the essential elements of a house. Lacking one of these, the structure will no longer be a house. For example, if the roof is absent, it is only an enclosing wall. Without the walls, it leaves behind the roof and foundation. This is only a pavilion. Only when it is a house, it can retain Qi and there is feng shui.

Sitting and facing directions

The sitting direction refers to the back of a building, and the facing direction refers to its front where the façade is situated. When there is a back, there will be a front. When there is a sitting direction, there will be a facing direction. They are 180 degrees out of phase to each other. On the 24-mountain chart, they are exactly on the opposite side of the location readings. In a real house, opposite to the front door, there may not be necessarily a solid wall. There may be a window or a back door. But this is still regarded as the back of the house.

The door is where the Qi enters a house

The Secret of Li Qi states that Qi creeps on ground. So when Qi moves near the opening, that is the door, of a newly constructed house, it will enter the house and flow along the eight directions inside. This process is known as the reception (bringing in) of vital breath. The door plays a very important role in the process.

Orientation of the door

After entering the house, the Qi will disperse along eight directions. If the roof or wall of the house is missing or defective, the bringing in of Qi will be incomplete. The orientation of the door will determine the pattern of Qi, whether it is good or bad, to be received by the house. For example, a door having an orientation of 130 degrees will receive a completely different pattern of Qi from that with an orientation at 140 degrees.

Forming a polar centre

After Qi flowing inside the house, it will gather again near the centre to form a polar centre. Originating from there, a secondary wave of Qi will flow towards the eight corners of the house again. The polar centre will stay as where it is unless there is a change in the foundation of the house in future. Now the bringing in of Qi to the house and polar centre formation is completed. Further division of compartments such as building rooms or bathroom inside the house will not alter its original Qi pattern.

Conclusion

In Xuan Kong Feng Shui, to determine the orientation includes locating the entrance that has involved in the reception of Qi, taking an accurate measurement of the facing and sitting direction and formulating a flying star chart. Based on the Xuan Kong theory, one will choose the most auspicious location and to arrange a good path for the flow of auscipious Qi. The buildings in modern cities are often surrounded by narrow streets, flyovers, electricity cables and transmission towers. So it is difficult to take an accurate measurement of the direction of the entrance of a building.

A compass is easily interfered by surrounding magnetic fields and will not be able to give an accurate measurement. If condition allows, one should take the measurement in an open space outside the building such as in a garden or an open area. It is optimal to find a spot where there is no interference from automobiles or transmission towers etc. One usually takes measurement by aligning the compass or luo pan with the facing direction of the entrance. However, we can also measure it from the sides or the back of the building and then readjust the reading by adding or subtracting 90 or 180 degrees.

A traditional Xuan Kong Feng Shui master may use other method other than compass or luo pan to ensure that the orientation of the building is accurately measured. A slight error in measurement may sometimes result in serious detrimental consequences from feng shui arrangement.