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01:28查看AI文稿AI文稿提到四零四，你首先能想到的是什么？是一串在平常不过的数字？还是你在浏览网站的时候出现的网页错误信息？其实数字四零四的背后也没你想的这么简单。大家好，我是舰长，今天我们就来聊聊四零四背后的含义。对于老一辈人来说，四零四不仅是一串数字， 它更是一个时代的标志，同时它也是中国最为神秘的城市之一。这座处理在甘肃黄沙中的城市没有名字， 只有个代号，四零四。虽然整个四零四城占地面积仅为四平方公里，但是曾经的这里却生活着近十万人， 这座城就好似凭空出现的一样，没人知道生活在里面的人长什么样，更不知道他们的目的是什么。整个四零四城占地面积虽然小，但是城内各种生活设施完善，他除了没有名字以外，地级城市有的设施基本上在这里都能看到，小到各种生活设备如电视、 冰箱、电脑等等大道电视台、社保局、土地局以及报社等行政机关。在四零四陈最繁盛的时候，城内甚至还建有雪高场以及自酿酒场，这样的条件说这里是世外桃源也不为过。 而生活在这里的人，他们则都是来自五湖四海各行各业的精英，他们之中不乏有老师、工人、科学家、厨师、物理学家等，他们怀揣着大国梦来到了这里。 可能有人就要问了，为什么这座生活设施完善的城市会建在黄沙之中呢？它存在的意义又是什么？为什么它能吸引全国的精英汇聚于此呢？关于这座城市的故事，我们还要从一九四五年说起，在。
6796科普新视界
02:06查看AI文稿AI文稿河城四零四位于祖国的大西北，在甘肃嘉峪关地区，这个小城并不大，在鼎盛时期也只有大约十万人的规模。之所以会建造这样的一座城市，与我国建国之初的河工业有着极为密切的关系。 二战末期，美国的两颗原子弹不仅炸蒙了日本，也炸醒了世界各主要大国，这些国家纷纷投入到了原子弹事业当中。 新中国成立之后，在百废待兴的情况下，为了国家安全的长久战略，同样开启了我国自己的核事业，试图建造镇国重器，也保证我们来之不易的和平。 在这样的背景下，我国开始选址、修建、合成，最终经过看定，决定在甘肃腹地建设一座神秘 城市。在相当长的一段时期内，这个城市完全是保密和封闭的，外人根本不知道这样一座城市的存在。而祖国也陆陆续续的将全国最好的技术工人和高水平的科学家调到四零四城， 在四零四城几乎集中了中国当年最优秀的人才，而这些国家栋梁来到西垂之地，在戈壁滩奉献一生，将自己的青春在此地挥洒，为的只是中国能够早日建造出第一颗原子弹。 值得一提的是，当时的合成在建造时还有苏联的影子，由于中苏关系当时还不错，苏联也帮助修建了一部分的建筑，比如四零四医院楼，就是当年的苏联专家楼。从这里也可以看出 我国核事业起步的艰难和不易，连这样的机密之地都要外国的参与和帮助。即使当时的中苏关系非常良好，艰难困苦郁如城，如今的中国早已经是一个核大国，拥有自己完全独立的核工业和先进的核打击力量， 这些成就的取得离不开当年四零四合成中的那些为国奉献的专家和工人的牺牲和付出。
673环寰地球
01:20查看AI文稿AI文稿这里呢，曾是中国最神秘的一座城市，没有名字，只有一个代号，四零四。地图上、导航上都是找不到这个地方的。这里呢，位于甘肃省玉门关外茫茫的隔壁滩中，在过去呢，对外称之为甘肃矿区。 这里可能是我走遍中国的途中唯一一座无法进入的城市了，因为在这里把门的可不是叼着烟袋的保安大叔，而是这个，是这个。 现在呢，距离里面只有几公里的距离了，我只能站在大门口感受一下当年这座英雄的城市。这里一九五八年新建，到二零零六年才开始陆续的搬离，直到那个时候呢，我们才知道四零四是一座合成。许多人在这儿献完 完了青春献终身，献完了终身献子孙，留下了三代人的奋斗史。这里呢，也是我国成功的研制出看的地方，是我们每一个中国人都应该记住的地方。 这里呢，将打造成全国最有纪念意义的军工文化教育基地。等有朝一日，口罩结束，我一定会进去重温一下那段激情燃烧的岁月。
5126凯哥行中国
12:39查看AI文稿AI文稿well behind me here is something truly exceptional now back in nineteen sixty six at a cost of seven hundred and forty million cny this is a gigantic sum of money to be spent behind me here is a decommission that's right， a decommission underground nuclear project now it started in nineteen sixty six， it began as an eighteen year process， the total construction area is one hundred and four thousand square meters and in total twenty kilometers now， why was this built as we can see if we go back in history we know that one of the first nuclear bombs was used in hiroshima and nagasaki in japan， this sent shockwaves throughout the world and yes， china had to do something to protect itself in the second part of this series， we will go to a secret area in china where they did develop a safety net to combat aggression come from from western countries， but for now i have to tell you that gigantic size and the feeling of this on what was happening in that era of time is very important to what we're dealing with events that are going on with us today， there's only been one country that's ever used in nuclear weapon and that's the united states of america， but today i want to take you into what was one of the largest infrastructure projects in the world come join me， so i'm at diversion nine tunnel here now， it's a very important part of this massive complex just to show you guys what i'm looking at and about to enter this is three kilometers in length， it's the main power supply system for the entire project now it's important they're using a lot of the water that's being pumped in here for the cooling system of the third loop of the reactor， which was potentially supposed to have politonium two three nine， so now i've come up to the control room wow， i got to tell you that this is remarkable we have to imagine for a moment what was going on in this room in the nineteen sixties， nineteen seventies early eighties and wow， it's quite the feeling can be in this room can you imagine the readiness that was going on in the late sixties seventies and as we push into the eighties for china to protect itself and in fact some of the people on the second part of this video that i'm showing today area four or four came here actually came to this part in chongqing to help china in its ambitions to protect itself preparing itself to potentially war now in addition for the combat readiness the tunnel engineering design can prevent the explosion impact of one million tons of tnt equivalent bombs it can resist the damage caused by an m eight earthquake it's really hard to fathom this because the underground nuclear reactor hall was the world's largest artificial cave twenty one kilometers in length and eighty meters in height it's equivalent get ready for this a twenty story building and it's known as the world's first artificial cave so now the nuclear instruments in this room thank god， we're never used and you can see that's why they're not complete they're made of imported stainless steel you can hear a pin drop in this room being in a place like this you can't fathom how big it is and how important it is， but have a look at this guys i've got a laser in my hand here and i'm beaming it up and showing you the height now this is where the fuel rods go into the reactor next store here okay and they would bring the trucks down you can see how far that laser is going now there's some nothing on the wall here that i want to show you guys in chinese it means learning and producing conquer all the difficulties then the enemy will be afraid of us try to understand what this country was going through i'm kind of speechless here but there's where the fuel rods would have gone in there to produce the plutonium， two three nine and look at the size of this place guys it's unbelievable and now we look at this place as somewhere that we can come and visit to try to learn and understand what happened so however， this project was officially terminated around nineteen eighty four a couple of years later it was turned into a fertilizer factory almost thirty years ago but now things have changed so now we're gonna head on to four or four and i can't tell you how serious this project was behind me here but there's a slogan that's put on the wall here don't tell your wife， don't tell your parents， don't tell your children about this project and you can see behind me the terrain this is a very ambitious project and of course very confidential in the people's liberation army went through this very tunnel behind me here to embark on a mega project of just historical and a stork investment this nuclear plant was china's national defense it prevented possible foreign invasions and nuclear attacks truly extraordinary what a scary part of history but we learn and with the current geopolitical issues that are going on in the world i hope we learn so this is the first part of this story that i wanted to tell today and now we're going to head to four o four yes， there is a connection here welcome to china's secret nuclear town situated in a far flung kobe desert it became china's national secret in nineteen fifties and home to the adam ball in the early nineteen nineties nearly one one hundred thousand people lived in the city that couldn't be found on any map people don't read about it in the newspapers or see it on tv in fact most chinese people don't even know it exists it had no name just a code four oh four name comes from the four or four company limited a company under the chinese national nuclear corporation when the city was built in nineteen fifty eight it served one purpose only to host a nuclear bomb in nineteen fifty five following threats of a nuclear attack from the united states chairman mastedan needed to quickly resolve this issue the site hosted the nation's first nuclear reactor which generated and estimated zero point nine tons of weapon grade politonium between nineteen sixty six and nineteen eighty four as well as politonium processing factories and nuclear warhead workshops just six years after it was built in nineteen sixty four china recorded its first successful nuclear bomb detonation in the gobi desert in neighboring singjang china staffed its own war complex with the country's finest scientists， technicians and other workers who lived in a close element absent from most maps， the city has an area of four square kilometers with its original municipal government， police department， televin stations and even its own courthouse in prison the city was completely self sufficient with a railway line shops and azu including schools and anything else you'd want from a city along with the first military nuclear reactor in china in fact， four or four is bigger than it looks with a complete underground defense system in case of a nuclear war four or four is an extremely dry in windy place， the days are glaringly sunny， it was an isolated place in the gobi desert apart from the stones， only one part of the plant called camel grass could survive naturally in the harsh desert in environment and all the trees in this place were growing through artificial cultivation for about half a century the surreal community flourished until residents were relocated in two thousand and five these cities are now gradually disappearing， but the real lives once existed there cannot be forgotten the establishment of four or four had made irreplaceable historical contributions to raising the international status of china in the world after the first explosions of an atomic hydrogen bombs in china in nineteen， sixty four and nineteen sixty seven respectively history now reminds us why this secret city was so important to china in response to the aggression that it saw from the west including a project name the manhattan project was a research and development undertaking during world war ii that produced the first nuclear weapon it was led by the united states with the support of the united kingdom in canada in a very short time after the atomic bomb development the united states detonated two atomic bombs over the japanese cities of hiroshima and nagasaki on the sixth ninth of august nineteen forty five the two bombings killed one hundred and twenty nine thousand and two hundred and twenty six thousand people most of whom were civilians and remain the only use of nuclear weapons in an arm conflict to this day the world was shocked in china found the only way to defend itself was to develop its own this could be one of the defining moments the chinese knew they had a threat to their own civilization because they remember and they will always remember if you've liked what you've seen in today's video， please leave a comment don't forget to subscribe thanks for watching report a fine media。
2786Alex世界之旅
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