[{"data":1,"prerenderedAt":280},["ShallowReactive",2],{"article:how-to-measure-house-facing-direction:zh":3,"article-topic:eight-mansions-feng-shui:zh":159,"related-articles:zh:eight-mansions-feng-shui:how-to-measure-house-facing-direction:feng-shui-luo-pan":244},{"slug":4,"title":5,"description":6,"category":7,"topicSlug":8,"legacyPath":9,"authorId":10,"publishedAt":11,"updatedAt":11,"noindex":12,"summary":13,"sections":14,"references":117,"relatedTools":140,"seo":142,"contentImage":145},"how-to-measure-house-facing-direction","怎样测量房子的朝向","所有以方位为基础的方法，开口前都要同一个输入：房子朝哪边。手机罗盘、正午影子、楼房自己的平面图，三种方法各有各的失效方式，而在室内，最便宜的那种最常出错。","风水","eight-mansions-feng-shui","","zhang-hao","2026-10-29",false,"坐与向相差 180 度，所以只需要一次测量。八方位每格 45 度，容差 22.5 度；二十四山每山 15 度，容差 7.5 度，这决定了手机够不够用。文中给出四个读数的污染检验、五个城市的太阳正午时刻表、完全不碰磁的平面图法，以及一个十三度就换格的算例。",[15,20,56,61,66,97,102,107,112],{"heading":16,"body":17},"一个方位，以及你决定哪面墙是「向」",[18,19],"所有以方位为基础的方法，开口之前都要同一个输入：这栋房子朝哪边。坐与向相差 180 度，所以这只是一次测量，不是两次。八宅按坐向来读一栋宅子；飞星要的是向的度数和建造年份。方位错了，后面每一个数字都错，而且不是靠解释能补回来的错。","哪面墙算「向」是约定，不是事实。一套楼房至少有三种候选：开窗最大的那面墙、你日常进出的那扇门、以及这栋楼被编址的那一侧。古籍设想的是独栋住宅，只有一面明显的正面；塔楼有四面。选被编址那一侧上对外开口最大的墙，把用的是哪面墙写下来，之后每次重测都用同一面。中途换墙，是一户人家手里出现两张互相矛盾的宅盘最常见的原因。",{"heading":21,"body":22,"table":25},"方法的容差决定你该用哪种仪器",[23,24],"两套体系都把方向切成了格子，所以容差可以直接写成度数。八宅用的八方位表，每格 45 度，意思是读数偏差 22.5 度以内仍落在同一格。罗盘上的二十四山每山 15 度，容差就只有 7.5 度。","这个差别决定了哪种仪器够用。差五度的手机，对八方位表是宽裕的，对二十四山是勉强的。所以问题不是哪种罗盘更好，而是你接下来要读哪张表。",{"headers":26,"rows":30},[27,28,29],"方位","覆盖角度","宽度",[31,35,38,41,44,47,50,53],[32,33,34],"北","337.5 - 22.5","45",[36,37,34],"东北","22.5 - 67.5",[39,40,34],"东","67.5 - 112.5",[42,43,34],"东南","112.5 - 157.5",[45,46,34],"南","157.5 - 202.5",[48,49,34],"西南","202.5 - 247.5",[51,52,34],"西","247.5 - 292.5",[54,55,34],"西北","292.5 - 337.5",{"heading":57,"body":58},"手机罗盘在楼房里为什么不准",[59,60],"手机罗盘读的是磁力计，磁力计读的是当地此刻的磁场。在室内，这个磁场主要是房子本身。楼板的钢筋通常按 150 到 200 毫米的间距铺设，就贴在你脚下；轻钢龙骨、金属门套、暖气片、音箱磁体、带磁吸的手机壳，各加一份。","这种误差不是一个可以减掉的固定偏移，它每挪半米就变一次。所以相隔一米的两次读数，差出的角度可能比一座山还宽。可行的检验是取四个读数：彼此至少隔一米，胸口高度，手机平放，每次顶边都朝同一个方向。四个读数在五度以内一致，取平均就留下；散得更开，说明读数被污染了，走到室外、阳台或门洞里再测一次，那里的楼板更薄或者没有。",{"heading":62,"body":63},"磁北、真北，以及表是按哪一个定的",[64,65],"指南针指的是磁北，地图和卫星图用的是真北。两者之差叫磁偏角，在中国大陆大致从东北的十度西，到新疆的几度东，穿过四川、云南的部分地区接近零，并且每年漂移约十分之一度。北京的读数，六到七度是那个量级。","接下来这一点常让人意外：校正到真北并不自动等于更正确。罗盘是磁性仪器，古典的表是按磁方位定的，现代做一次真北校正，反而可能把读数推离表所预设的那套约定。要紧的是前后一致。说明你用的是哪个北，下次重测还用同一个。如果读数离格子边界还有十度以上，这个区别改变不了结论；如果不到十度，就把它说明白，而不是悄悄选一个。",{"heading":67,"body":68,"table":71},"正午影子：不需要任何仪器",[69,70],"在真太阳时的正午，太阳位于正南（北回归线以北都如此），所以任何直立物体的影子都指向正北。一根杆、十分钟太阳、地上画一道记号，就得到一条钢筋扭不歪的真北线。","唯一要算准的是时刻。太阳正午不是钟表正午。中国统一用东八区，也就是东经 120 度那条经线，凡是这条线以西的地方，正午都更晚，再叠加均时差，最多还要加减十六分钟。十月下旬正是均时差接近极值的时候，所以下表的正午时刻横跨了两个半小时。",{"headers":72,"rows":76},[73,74,75],"城市","10 月 29 日太阳正午","每米杆高的影长",[77,81,85,89,93],[78,79,80],"哈尔滨","11:18","1.65 米",[82,83,84],"北京","11:58","1.32 米",[86,87,88],"上海","11:38","0.98 米",[90,91,92],"广州","12:11","0.73 米",[94,95,96],"乌鲁木齐","13:53","1.53 米",{"heading":98,"body":99},"影子到底有多准",[100,101],"正午前后影子转得很慢，这正是这个方法能用普通钟表的原因。十月下旬在北京的纬度上，钟表每差一分钟，影子方向只差约 0.3 度：差五分钟是 1.5 度，差十分钟是 3 度。手机时钟准确到秒，所以实际误差取决于你把影子顶端标得多准，而不取决于计时。","这个方法有三种失效情形，每一种在动手之前就能看出来。阴天没有影子。太阳太高时影子不可用：广州在 6 月 21 日的正午太阳高度是 90.3 度，影子缩回物体底下。地面不平会把画出来的线带歪，所以要在硬而平的地面上做，不要在草地上做。",{"heading":103,"body":104},"平面图法：完全不碰磁",[105,106],"对一套楼房来说，最可靠的读数常常不是站着测出来的，而是从图上量出来的。打开这栋楼的卫星视图，看清图上北在哪，标出你选定的那面正面墙，再量这面墙的外法线与北之间的夹角。得到的是一条真北方位，不含任何磁性成分，钢筋碰不到它。","它的失效方式不一样：答案的好坏只取决于你选对了哪面墙，以及轮廓图准不准。所以把它当交叉核对，而不是替代品。手机与平面图差出十度以上，其中一个是错的，通常是手机。两者在五度以内吻合，数字就到手了，可以停止测量。",{"heading":108,"body":109},"十三度就能改变结论",[110,111],"假设一套房子，客厅窗朝 118 度，而整栋楼的主立面朝 105 度。肉眼看上去两个都算东南偏东。放在八方位表上，105 度落在东，东到 112.5 度为止；118 度落在东南。在八宅里这两格挂的是不同的星，于是十三度的测量差会把整套读法翻过去。放到二十四山上，这同一段差是从乙跨到了辰。","这就是要把数字写下来、而不是写一个「东」的理由。东不是任何一张表能用的输入；一条没记下测量方法的方位，下一个人在同一套房子里也测不出同一个数。",{"heading":113,"body":114},"方位不能决定什么",[115,116],"方位是若干输入里的一个，它也不是对一套房子的判决。它压不过采光、潮湿、噪音、一扇开不到底的门，或者一个谁都不愿意久坐的房间。当传统的偏好与一个可测量的状况冲突时，先处理状况，方位可以等。","它也解决不了体系之间的分歧。八宅说这间房可用、飞星说这间房不利，两套体系内部都没有规则能裁定，因为它们是两张不同的表，套在同一面墙上。把方位、测它的方法、以及测量日期一起记下来。没有方法的数字是主张，不是测量。",[118,126,134],{"id":119,"kind":120,"title":121,"detail":122,"publisher":123,"url":124,"accessedAt":125},"huangdiZhaijing","traditional","《黄帝宅经》","用于说明传统住宅方位与空间术语的历史背景；现代建议按现实条件另行判断。","维基文库数字文本","https:\u002F\u002Fzh.wikisource.org\u002Fwiki\u002F%E9%BB%83%E5%B8%9D%E5%AE%85%E7%B6%93","2026-07-14",{"id":127,"kind":128,"title":129,"detail":130,"publisher":131,"url":132,"accessedAt":133},"noaaSolarCalculator","practical","NOAA 太阳位置计算器","用于核对当地太阳正午时刻与均时差，也就是真太阳时校正相对官方时间要加减的那一部分。","美国国家海洋和大气管理局（NOAA）全球监测实验室","https:\u002F\u002Fgml.noaa.gov\u002Fgrad\u002Fsolcalc\u002F","2026-10-16",{"id":135,"kind":128,"title":136,"detail":137,"publisher":138,"url":139,"accessedAt":133},"ianaTimeZones","IANA 时区数据库（tzdata）","用于核对历史 UTC 偏移与夏令时切换的参考数据集；1986 至 1991 年中国夏令时的起止日期即出自其中 Asia\u002FShanghai 的规则。","互联网号码分配机构（IANA）","https:\u002F\u002Fiana.org\u002Ftime-zones",[141],"feng-shui-luo-pan",{"title":5,"description":6,"path":143,"type":144},"\u002Farticles\u002Fhow-to-measure-house-facing-direction","article",{"src":146,"srcByLocale":147,"alt":149,"width":150,"height":151,"altByLocale":152,"captionByLocale":155},"\u002Fimg\u002Farticles\u002Fhow-to-measure-house-facing-direction.svg",{"tw":148},"\u002Fimg\u002Farticles\u002Fhow-to-measure-house-facing-direction-tw.svg","Three ways to measure a home facing direction, set side by side with what each one needs and how each one fails: a phone compass, a noon shadow, and the building plan.",1280,960,{"zh":153,"tw":154},"三种测朝向的方法并排：手机罗盘、正午影子、楼房平面图，各自需要什么、又各自怎么失效。","三種測朝向的方法並排：手機羅盤、正午影子、樓房平面圖，各自需要什麼、又各自怎麼失效。",{"en":156,"zh":157,"tw":158},"The cheapest method is the one that fails indoors. A noon shadow and a plan both ignore the steel in the slab.","最便宜的那种方法，恰恰是在室内最常出错的那种。正午影子和平面图都不受楼板钢筋影响。","最便宜的那種方法，恰恰是在室內最常出錯的那種。正午影子和平面圖都不受樓板鋼筋影響。",{"topic":160,"articles":189,"tools":243},{"slug":8,"title":161,"eyebrow":162,"description":163,"relatedTools":164,"articleIdeas":165,"seo":170,"sections":173},"八宅风水","理气风水","八宅风水的实用读法：命卦怎么来、宅卦怎么量、两卦相对查出的八星表怎么用，以及传统真正会看的那三处地方。",[],[166,167,168,169],"命卦计算方法","四吉方与四凶方","八宅风水床位","命卦与房间选择",{"title":171,"description":163,"path":172},"八宅风水指南","\u002Ftopics\u002Feight-mansions-feng-shui",[174,177,180,183,186],{"heading":175,"body":176},"它是什么：两个数，一张表","八宅是风水里最小的一套完整系统。它只需要两个卦。人的卦叫命卦，由出生年份和性别推出来；如果生日在该年春节之前，年份要往前退一年。宅的卦由坐向定，靠罗盘实测，不能靠猜。两个卦并排一放，传统就交回一张固定的表：八个方位，每个方位已经配好一颗星。所谓八宅，说的就是宅卦只有八种，一栋房子必落在其中一种里。不用画盘，不用查元运，不用飞星，也没有第二层要叠上去。小，是它的特点，也是它被说得远超过自身能力的原因。",{"heading":178,"body":179},"八个方位，各自管什么","这张表永远只产出同样的八个名字。四颗读作吉：生气、天医、延年、伏位。四颗读作凶：绝命、五鬼、六煞、祸害。哪个方位配哪个名字，完全取决于你起手的那个卦，配法由大游年歌固定，一句口诀就能把整张表推出来。同一张表也可以拿宅卦起手，推出这栋房子八个方位的吉凶；命卦与宅卦的差别，只在于起手用哪个卦。这个过程里没有任何一步在看你家的房子、你的身体或你今年遇到了什么，它只是拿出生年份和罗盘方位做算术。把八个名字当成给方位排序的一套说法，这套系统就不会假装知道自己本来不知道的事。",{"heading":181,"body":182},"你是东四命还是西四命","八个卦分成两组。坎一、离九、震三、巽四属东四；坤二、兑七、乾六、艮八属西四。东四命人的四个吉方就是东四方的方位，西四同理。由此引出一条常听到的说法：东四命的人应该住东四宅。底层规则是真的，但那个否决权不是。城市住宅里你很少能选坐向，四口之家往往两组都有人。真要按这条规则去挑房子，代价通常是放弃采光、通勤距离和面积，而这些代价往往比一个方位更实在。这条规则真正能做的，是在你已有的房子里给房间排序，而不是替你判定一栋房子能不能住。",{"heading":184,"body":185},"真正要看的三处：门、卧室、灶","古法八宅不是逐间审计。它只看三个点，门、主卧、灶，然后问：这三处对使用它们的人来说，落在吉方还是凶方。原因很历史：在这套系统成型的那些房子里，这三个点就是一家日常生活真正发生的地方，把每一平方米都测一遍是浪费力气。现代住宅房间更多、作息也不同。把三点法作为排优先级的习惯，再加上你确实每天待上几个小时的那两三间房，其余的当作可选。还有一个现代问题：开放式厨房让灶和客厅连成一片，灶不再是一个点，这时按炉具的实际位置算，比按户型图上印的厨房标签算更接近原意。",{"heading":187,"body":188},"它帮不上忙的时候","三个界限值得直说。第一，它不看形：门前的路、地块的形状、一间没有窗的卧室。吉方落在一间坏房子里，那还是坏房子。第二，它没有时间维度。和飞星系统不同，八宅不随元运和流年改变，所以它说不出「什么时候」。第三，罗盘读数是最弱的一环：手机罗盘、钢质门框，或者五度的误差，就能把方位推进下一个宫，让整张表里的名字全部换掉。把八宅用在几个都可行的方案之间做权衡，而不是用它来说服自己接受一个本来就不合适的方案。如果同时在用飞星，注意两套系统吃的是不同输入：八宅只看卦，飞星要看坐向、元运和三颗星。两边结论不一致时不要硬凑，先回到房间本身的条件。",[190,201,211,221,231,234],{"slug":191,"title":192,"description":193,"category":7,"topicSlug":8,"legacyPath":194,"authorId":10,"publishedAt":195,"updatedAt":196,"summary":197,"relatedTools":198,"seo":199},"ming-gua-calculation","命卦计算：一条取模，三处会改答案的约定","命卦是一条可以核对的算式：男命用 2 减年份，女命用年份加 4，对 9 取余。两位数字简写在 2000 年后全错，得五的折法和立春边界各改掉一部分人的答案。","\u002Fpages\u002Farticles\u002Fminggua-jisuan-fangfa.html","2026-01-29","2026-11-01","命卦只有八种输出，规则完全确定，所以两张公开表对不上时，原因一定是约定不同：简写有没有过期、五折到哪一卦、年份从立春还是从正月初一起算。三处都能单独算清代价。",[],{"title":192,"description":193,"path":200},"\u002Farticles\u002Fming-gua-calculation",{"slug":202,"title":203,"description":204,"category":7,"topicSlug":8,"legacyPath":205,"authorId":10,"publishedAt":206,"updatedAt":11,"summary":207,"relatedTools":208,"seo":209},"four-auspicious-directions","四吉方：一句歌诀读成八个方位","四吉方由《大游年歌》生成：从本卦起按后天八卦次序读七个字，即得生气、天医、延年、伏位。本文给出八句歌诀、八个卦的结果行、四吉的排名，以及命卦与宅卦冲突时的处理。","\u002Fpages\u002Farticles\u002Fsiji-xiangfang-jiangjie.html","2026-01-31","四吉方不是挑出来的，是算出来的。一句歌诀绕八个宫走一圈，整张表就出来了；同一张表还给出排名，让你知道该先放弃哪一个。",[],{"title":203,"description":204,"path":210},"\u002Farticles\u002Ffour-auspicious-directions",{"slug":212,"title":213,"description":214,"category":7,"topicSlug":8,"legacyPath":215,"authorId":10,"publishedAt":216,"updatedAt":196,"summary":217,"relatedTools":218,"seo":219},"bed-placement-eight-mansions","八宅床位：先定墙，再谈方向","八宅床位是两个决定：哪面墙能挂床头，以及那面墙恰好给出哪个吉方。算例把两个人的数字填进去，说明两张表交叉时没有任何汇率可以换算。","\u002Fpages\u002Farticles\u002Fbazhai-chuangwei-buju.html","2026-02-02","床头靠实墙、躺下看得见门、头上不是窗——这三条先决定床放哪儿；方向跟着床头走，所以同一面墙能给出两个答案。两个人同睡时两张表交叉，而八宅在人与人之间没有汇率。",[],{"title":213,"description":214,"path":220},"\u002Farticles\u002Fbed-placement-eight-mansions",{"slug":222,"title":169,"description":223,"category":7,"topicSlug":8,"legacyPath":224,"authorId":10,"publishedAt":225,"updatedAt":226,"summary":227,"relatedTools":228,"seo":229},"room-selection-personal-gua","介绍如何把个人命卦和宅卦作为传统房间选择参考，并与采光、通风、噪声、出入、面积及每位家庭成员的实际需要一并比较。","\u002Fpages\u002Farticles\u002Fbazhai-fangjian-xuanze.html","2026-02-04","2026-10-17","命卦只能作为可选的传统偏好，不能替家庭成员决定房间。应先比较居住条件和每个人的需求，再决定是否参考方位标签。",[],{"title":169,"description":223,"path":230},"\u002Farticles\u002Froom-selection-personal-gua",{"slug":4,"title":5,"description":6,"category":7,"topicSlug":8,"legacyPath":9,"authorId":10,"publishedAt":11,"updatedAt":11,"summary":13,"relatedTools":232,"seo":233},[141],{"title":5,"description":6,"path":143,"type":144},{"slug":235,"title":236,"description":237,"category":7,"topicSlug":8,"legacyPath":9,"authorId":10,"publishedAt":238,"updatedAt":238,"summary":239,"relatedTools":240,"seo":241},"bagua-map-placement","八卦图怎么铺：哪面墙，哪一种北","八卦图有一版钉在大门上，有一版钉在罗盘上。一个卦位里是哪三山、中宫到底占多少地面、两版错开到几度就完全不重叠，都能算出来。","2026-10-31","两张图共用同一组九个卦名，分歧在基准：一版把最下一排钉在大门那面墙上，一版把八个扇区钉在圆周上。罗盘那一版每卦四十五度，正好是二十四山里的三山，中宫在角度上没有宽度；九宫那一版把平面切成九等分，中宫占 11.1%。两版错开三十度时，东南角只共享三分之一块地板；错开四十五度，一块也不共享。户型缺一角，九格就不再是九等分；磁力计五度的误差，会让两成二的朝向读不出落在哪一卦。",[141],{"title":236,"description":237,"path":242,"type":144},"\u002Farticles\u002Fbagua-map-placement",[],{"articles":245},[246,259,269],{"slug":247,"title":248,"description":249,"category":250,"topicSlug":251,"legacyPath":252,"authorId":10,"publishedAt":253,"updatedAt":254,"summary":255,"relatedTools":256,"seo":257},"door-facing-door-feng-shui","门对门风水","两扇门只有在平面上开口重叠时才算相对。先量中心线错开量，再看这条轴线带的是视线、空气、声音还是日光。","风水化解","home-feng-shui","\u002Fpages\u002Farticles\u002Fmen-dui-men-huajie.html","2025-09-09","2026-10-28","两扇 80 厘米的门要错开 80 厘米，开口才不重叠——这一个数字能结束大部分走廊门的争论。轴线上带的是视线、空气、声音和日光，只有一部分算毛病；密闭住宅里的穿堂风通常是通风，不是漏气。",[141],{"title":248,"description":249,"path":258,"type":144},"\u002Farticles\u002Fdoor-facing-door-feng-shui",{"slug":260,"title":261,"description":262,"category":250,"topicSlug":251,"legacyPath":263,"authorId":10,"publishedAt":264,"updatedAt":254,"summary":265,"relatedTools":266,"seo":267},"missing-corner-feng-shui","缺角风水","先画外接矩形，量出缺口占比与凹口深度，再看缺口里原本坐着什么：一面窗墙、入户、卫生间排风，还是只有墙。镜子放在最后，多数时候用不上。","\u002Fpages\u002Farticles\u002Ffangwu-quejiao-huajie.html","2025-09-11","不到 2% 是壁垛，2% 到 10% 是凹位，超过 10% 平面才真的不是矩形。三分之一这条经验规则其实是一个家具尺寸；凹口没越过房间进深的一半，房间就还是一个可用进深。",[141],{"title":261,"description":262,"path":268,"type":144},"\u002Farticles\u002Fmissing-corner-feng-shui",{"slug":270,"title":271,"description":272,"category":250,"topicSlug":273,"legacyPath":274,"authorId":10,"publishedAt":275,"updatedAt":196,"summary":276,"relatedTools":277,"seo":278},"feng-shui-plants","风水植物：名字不管用，三个数才管用","风水植物的说法大多经不起一次除法。真正决定结果的是三个可查的数：光照需求、宠物毒性、盆的容积。「净化空气」要两千两百盆才顶一次换气，卧室耗氧说差了三个数量级。附六种常见植物对照。","feng-shui-cures","\u002Fpages\u002Farticles\u002Fzhaocai-zhiwu-tuijian.html","2025-09-13","品种名是整张清单里最弱的变量。起作用的是三样能查的东西：日光积分量的需求区间（2–4、4–8、10 以上摩尔）、对猫狗的毒性、盆能存多少水。要让植物顶一次换气需要约两千两百盆；卧室里那盆覆盖一个人一天耗氧量的百分之零点四。",[141],{"title":271,"description":272,"path":279,"type":144},"\u002Farticles\u002Ffeng-shui-plants",1793614153756]