香港寸金尺土，奇則（蹟）難免。圖中上排左二是另類風水奇則「呂字廳」，中宮收窄兼轉向，氣雜不純，並不可取。筆者在「藏品」中選了數張別具心思的作品公諸同好。古代居所一如現今村屋，方正為主，如果有斜邊或呈圓狀，放置家具便費剎思量。從風水方面考慮，非方正多視為「缺角」，影響居者，至於影響誰和顯出甚麼效應，可以從方位與人倫關係上審視。有缺相對自然有凸，如何決定是何者則不能一概而論，如果是父母子女同住，通常取四正向方正圖則單位較少出現問題，而避免另類風水奇則「呂字廳」。
Given the scarcity of land resources in Hong Kong, real estate developers try their very best in maximizing the floor plan efficiency & it is not uncommon to see their miraculous works from time to time. Ancient Chinese residence shape was mostly rectangular & so as the town house in New Territories nowadays. Should there be any tilted lines & round corners, residents would have a hard time arranging the space within. In Geomancy, it is considered non rectangular floor plan usually would have “missing corner(s)” & its effect would depend on which part is missing. The missing part would then in turn reveal which member in the family will be affected. In a relative sense, a shape with missing corner could be viewed as bulging for others & there is no simple way to define which is which in general. For a more conservative approach, choosing a rectangular shape floor plan with a NS or EW bearing would be a safe choice for married couple with kids. The second floor plan counting from left in the top row is not a desirable choice. There are two reasons at least: a) squeezed in the middle & b) bearing change, the different mix of Qi in a unit.