Hello, ladies and gentlemen!
Today we are going to visit the former emperor worship place - Tiantan. Now let me introduce the echo wall, it refers to the surrounding the imperial vault and circular wall tall things Peidian for. The perimeter of the fence is 193.2 meters, the diameter is 61.5 meters, the wall height is 3.72 meters, and the thickness is 0.9 meters. If two people were standing in the courtyard things Peidian after the wall, all of the north wall face whisper, like to call each other like dialogue, very interesting, this is the origin of the name of the echo wall.
Here is a charming center stone echo upper center has a Circular Mound Altar Stone Center, visitors are most interested in a wonderful place. When you speak softly on the center of the circle, you sound great and sympathetic. But people outside the second, Third Ring Road do not feel that way. Why? The original, this is a kind of acoustic phenomena due to its top is very smooth, the sound wave to the distance around the fence panel, can quickly be reflected. According to the acoustic expert test, the time from the sound to the sound wave and back to the stone was only zero point zero seven seconds. The speaker can not distinguish between the original and its echo, so standing in the center of the stone sound, the sound is loud echo. The feudal rulers put this phenomenon as "God acoustic vertical image", is the world peoples court in accordance with the infinite heart response, and gives the "King billion trillion from the stone" reputation.
Today's tour is coming to an end. I hope it will be a permanent memory of your trip to Beijing during my stay in Tiantan. At the same time, please also bring the blessing of Tiantan to your family and friends.
各位游客，我们今天所要参观的就是以前皇帝祭天的地方——天坛。
明朝永乐皇帝迁都北京以后，在北京南城仿照南京的大祀殿建立了这作用于祭天的圣坛，占地面积达到了273万平方米。主建筑是大祀殿，也就是今天祈年殿的位置上。天坛有外坛墙和内坛墙，北面是圆形，南面是方形，取意天圆地方。在一开始，祭天和祭地都是天坛，直到明嘉靖年间在北城修建了地坛，才分开的，并且新增了圜丘坛，用于孟冬祭天，把原来的大祀殿改为大享殿，专门用于孟春祈谷，当时殿宇屋顶已经是三重檐了，从上至下的蓝黄绿三色瓦分别代表了天地万物。而在乾隆年间，有将大享殿改为现在的祈年殿，而将屋顶瓦片都改成了蓝色的琉璃瓦。从而形成了今天我们所看到的这个世界上最大的祭天建筑群。
可是这样一个祭天圣地，却也曾经在1860年时遭到英法联军的洗劫，继而在1900年的时候又遭到了八国联军的蹂躏。在1916年袁世凯登基的时候也曾经在天坛上演了一出祭天的闹剧。在1918年，天坛最终还是以公园开放。解放以后天坛不仅成了著名的旅游景点，而且还是北京城市绿地的组成部分，来这里的不光是旅游者，还不乏一些专门为了强身健体的老人们。
现在就让我们沿着当年皇帝登坛的路线开始此次游览。
说完了神坛的奇妙，我在给您介绍一下祭天大典的盛况。到了每年的冬至，皇帝就要在这里祭天。在大典前两天，皇帝要在故宫里进行斋戒，而到了第三天，也就是冬至前一天，就要到天坛的斋宫进行斋戒。冬至那天，在日出前七刻，现在的凌晨四点多，奏报时辰，皇帝起驾，斋宫东北角的钟楼开始鸣钟。到具服台盥洗更衣，神牌都送到台面相应的位置，也就是七组神位，称作七幄;在圜丘前燔柴炉上放一只牛犊，用松枝燔烧，西南的望灯杆望灯高悬，点燃蟠龙通宵宝蜡，台南广场上排列着奏乐队，配合着中和韶乐，在文武百官的陪同下，祭天大典就正式开始了，皇帝由南棂星左门登坛，这时钟声停止，到了第二层南侧拜位站好后，听候司赞人报仪程。恭读至皇天上帝的祝文。礼仪结束以后，要将神位前的贡品分别送到燔柴炉(从正位幄次撤下的祭品再次焚烧，皇帝也要一旁恭立目视，称为望燎)和燎炉(圜丘坛共有12座燎炉，在瘗坎北侧，从东向西排列着8个;内围护墙东西棂星门外各有一对。从配位幄次车下的祭品分别送到8个燎炉内焚烧，而四个从位幄次的祭品送到棂星门处)焚烧，烟雾腾空，象征着送到天庭。而后还要将牛尾、牛毛、牛血送到瘗坎掩埋，象征不忘祖先茹毛饮血之意。在这个典礼上，需要特别提到的是皇帝恭读祝文所站立的地方，就是刚才所说的台面中心天心石。他是天坛三大声学现象之一。在这里朗读的`时候声音特别洪亮，而且现在这里也是一样的，各位游客不妨体会一下这奇特的效果，也像当年的皇帝一样，向上天诉说自己美好的愿望。
现在咱们继续沿着中轴线行走，面前的建筑叫做天库，而它的正殿就是皇穹宇。皇穹宇建于明嘉靖九年，起初叫做泰神殿，到了十七年，改名为现在的皇穹宇，它的作用就是在平日存放圜丘坛祭祀主神的地方，所以这里也叫圜丘坛寝宫。殿内正面的圆形石台上安放的就是皇天上帝的神牌，而前边两侧的四个方形石台上安放的则是八位祖先神主，还有东西配殿用来存放从祀神位。而皇穹宇三个字也分别代表了至高无上，天，宇宙的意思，更加显示出它的神圣和至尊。
它是一座建筑艺术价值非常高的殿宇，总体呈圆形，下边是高2.85米的圆形须弥座，为青白石筑成，有东南西三个方向的出陛，也就是台阶，而在南向出陛还有二龙戏珠的丹陛石。上边是蓝色筒瓦单檐攒尖鎏金宝顶。而在殿内还有八根檐柱和八根金柱，大殿上架没有横梁承托，全都是靠各类斗拱层层上叠来支撑，步步收缩，从而形成了精美的穹隆圆顶。这里边还运用了物理学中的杠杆原理。这组建筑不仅十分精美，而且还有回音壁和三音石，这和刚才我们说的天心石合称天坛三大声学现象。回音壁就是皇穹宇的外墙，围墙建造的磨砖对缝，十分的平滑，是很好的声音载体，可以传声，在传递途中对声音损失极小，只要对着墙说话，就算相隔四五十米，见不到面，都可以清晰的听到对方说话。而三音石则是皇穹宇大殿正前方的三块石头，您站在第一块石头上拍手可以听到一次回音，第二块石头可以听到两次，而第三块就可以听到三次回音，所以称为三音石。在后来也有人把它叫做三才石，取天地人三才的意思。
也许您刚才就已经注意到了，天坛有非常多的柏树，不错，它就好像北京一个天然的氧吧。而在这许多古柏当中，有一株500余岁的桧柏，就是回音壁西墙外的这棵九龙柏。它的树干纹理非常的奇特，布满了沟壑，而且旋转扭曲，好像9条蟠龙缠绕嬉戏，所以叫它九龙柏真是一点也不过分。
谢谢大家，如有不妥之处，还望见谅。
Hello everyone：
I'm Liu Xueqi, a tour guide from Beijing Tiantan. You can call me Liu dao. Today, I will accompany you to visit Tiantan in Beijing.
What we see now is Tiantan. Tiantan is the two dynasties of Ming and Qing emperor worship, prayer harvest places, is the largest one of the temples of Tiantan building, 1700 meters from east to west, 1600 meters long from north to south. The total area of 2 million 730 thousand square meters, and the altar wall and the altar wall, the north is round, the south is square, a symbol of "tianyuandifang".
Now, please follow me. Here is the temple, it is 38.2 meters high, 24.2 meters in diameter, facing south, the entire hall is a wood, which has carved dragon four on behalf of the spring and summer, autumn and winter four seasons. The rest represent twelve months and twelve hours.
Go is the echo wall, ground brick using a city wall, the wall covered with blue glazed tiles. The echo wall has the unusual echo effect, a person close to the wall to speak to the other end, a two hundred meters, the other is clearly heard, Trolltech, mysterious atmosphere create a kind of "telepathy between heaven and man". Let's try it.
Please note the back wall of the periphery, it is more than 500 year old cypress tree trunk is very strange because of the texture, like nine dragons twining play, so it is called the nine. We can have a photo taken with him.
Fellow tourists, the one-day tour of Tiantan in Beijing will be over soon. Do you have a good time? I hope to have a chance to guide you as soon as possible.
Comment: this guide word prominent characteristic is: the structure is clear, very methodical, fluent language. Begin by making polite greetings to passengers and introducing yourself. Then the Tiantan, the author first introduces the Tiantan uses and introduces its contour with figures, then introduces the Qinian hall, Tiantan echo wall, Sabina chinensis. After reading, people can not help but produce "this trip," the good wishes, arouse the interest of visitors.