Note:  The following is an excerpt from  my “Practical Door Feng Shui for Wealth” course.
 
There are “forbidden” regions in the design of house-facing and door-facing which may not be taught in some Feng Shui schools.  Examples are Ba-sha (“8-killings” ) and void lines (covered in past blogs).
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BA-SHA DOORS
Ba-sha door is based on 5-element theory.  It stresses that the sitting and facing of a house should not be “ke” or subdued by door or road/ water
with opposing 5-element nature.  For example, if a house sits on gui-water mountain, you don’t want to set a door at a region with earth element nature like chen-earth mountain.
 
The code for Ba-sha is as follow:
“Kan dragon, Kun rabbit, Zhen monkey
Xun rooster, Qian horse, Dui snake
Gen tiger and Li pig are “Ba-sha” (8 killings).
 Houses and tombs will be finished when running into it.”
坎龍坤兔震山猴,巽雞乾馬兌蛇頭;
艮虎離豬為八煞,宅墓逢之一齊休。
 
            BA-SHA LOCATION TABLE
HOUSE/  
TOMB          
HOUSE OR TOMB      
SITTING/ FACING                         
NO DOOR / 
SHA* AT:         
坎宅/坟 
KAN (N)
坐壬向丙、坐子向午、坐癸向丁
ren/ bing; zi/ wu; gui/ ding
忌开“辰门”**
CHEN (SE1)
艮宅/
GEN (NE)
坐丑向未、坐艮向坤、坐寅向申
chou/ wei; geng/ kun; yin/ shen
忌开“寅门”
YIN (NE3)
震宅/
ZHEN (E)
坐甲向庚、坐卯向酉、坐乙向辛
jia/ geng; mao/ you; yi/ xin
忌开“申门”
SHEN (SW3)
巽宅/
XUN (SE)
坐辰向戌、坐巽向乾、坐巳向亥
chen/ xu; xun/ qian; si/ hai
忌开“酉门”
YOU (W2)
离宅/
LI (S)
坐丙向壬、坐午向子、坐丁向癸
bing/ ren; wu/ zi; ding/ gui
忌开“亥门”
HAI (NW3)
坤宅/
KUN (SW)
坐未向丑、坐坤向艮、坐申向寅
wei/ chou; kun/ gen; shen/ yin
忌开“卯门”
MAO (E3)
兑宅/
DUI (W)
坐庚向甲、坐酉向卯、坐辛向乙
geng/ jia; you/ mao; xin/ yi
忌开“巳门”
SI (SE3)
乾宅/
QIAN (NW)
坐戌向辰、坐乾向巽、坐亥向巳
xu/ chen; qian/ xun; hai/ si
忌开“午门”
WU (S2)
Note:  Color here show the elemental nature of each location.
* “Sha” includes power-post, dead trees, T-junction, incoming/ outgoing water or road, well, wall-knife, roof-top corner and etc.   ** XU (NW1) is also a Ba-sha location for Kan house/ tomb.
              
Ba-sha theory has many applications besides door locations.  If the Ba-sha location of a house or tomb sees any of the followings: dead trees, T-junction, roof-top corner,  well, wall-knife sha, incoming/ outgoing water or road, tall object–  is also considered a violation of Ba-sha.
 
EFFECTS OF BA-SHA VIOLATION
— premature deaths (esp. younger males)
— accidents, surgeries and cancer
— dwindling luck
— declining prosperity/ losing wealth
 
Ba-sha is a major Feng Shui formula sha (Li-qi sha) with a pretty accurate track record.  Every Feng Shui practitioner should know the application of Ba-sha. You do not want to ignore this Ba-sha location when designing or buying a house or tomb.
Ken Lai
“Destiny/Luck Mgmt. w/ Bazi- Basic/ Advanced w/18 hr. HD video each
“Advanced Visual Form Feng Shui w/ 23 hr. HD video
“Feng Shui Toolbox: Sha-qi, Health/Wealth/Career” w/ 7 hr. HD video
“Period 7/8 Feng Shui Toolkit w/ Adv. Flying Star techniques” w/ 6 hr. HD video
“Practical Date-Selection Methods (incl. XKDG) w/ 12 hr. video
“Professional Imperial Qi-Men-Dun-Jia 4G” w/ 21 hr. video
“EZ QMDJ series: Astrology, Date/Task Selection, Annual Luck/FS i”w/ 3 hr. HD
“EZ QMDJ Advanced Feng Shui” with 4 hr. HD video
“Daoist Talismans for Feng Shui/Blessing” w/ 24 hr video
 “Practical Door Feng Shui for Wealth” w/ 3 hr. video
 “4-Pillars Forecasting Bootcamp” with 12 hr. video
 http://www.kenlaifengshui.com
 http://kenlaifengshui.blogspot.com   
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