After more than a decade in the United States, nuclear physicist Liu Chang, whose research has been crucial in the journey to achieve fusion energy, has left Princeton University for a position at Peking University in Beijing.
Last month, Liu joined the Institute of Heavy Ion Physics at Peking University's School of Physics as an assistant professor, according to a post on his new department's social media account.
Liu Chang received a bachelor's degree from the School of Physics at Peking University in July 2011, and a doctorate in plasma physics from the Department of Astrophysics at Princeton University in February 2017. From March 2017 to January 2025, he conducted research at the Princeton Plasma Physics Laboratory, and joined the School of Physics at Peking University in February 2025.
Liu's research has centred mainly on plasma physics and nuclear fusion. In particular, he has focused on solving problems related to the physics of runaway electrons – a kind of energy leakage – and other energetic particles in magnetic confinement fusion devices.
1950 在香港，华罗庚写了一封告中国留美同学的公开信。 他在这封长达万言的信中，情真意切地动员爱国的知识分子放弃国外优越的物质生活，投入祖国的怀抱尽一份力。 他真诚地呼唤说：“朋友们，梁园虽好，非久居之乡。 归去来兮！ 为了抉择真理，我们应当回去，为了国家民族，我们应当回去，为了为人民服务，我们也应当回去，就是为了个人出路，也应当早日回去，建立我们工作的基础，为我们伟大祖国的建设和发展而奋斗！
华罗庚的忠言今天也适用
Google Translate: ‘1950 In Hong Kong, Hua Luogeng wrote an open letter to his Chinese students in the United States. In this thousand-word letter, he sincerely mobilised patriotic intellectuals to give up the superior material life abroad and devote themselves to the embrace of the motherland to do their part. He called out sincerely, "Friends, although Liangyuan is good, it is not a long-time hometown. Come back! In order to choose the truth, we should go back. For the nation, we should go back. In order to serve the people, we should also go back. For the personal way out, we should also go back as soon as possible, build the foundation of our work, and strive for the construction and development of our great motherland!’
‘Hua Luogeng's loyalty is also applicable today.’
Good‼️The more the merrier, the more the better for the motherland‼️中国万岁‼️
Liu maybe good,but never perfect or genius.
Can you explain why u see him as a mediocre physicist .Atleast you r not a Landau to grade physicists, as far as i can see
He never said mediocre.
Strawman arguments..refrain from that.
So what, his heart is at the right place China, better than the Fucked Up- USA with a Convicted Criminal President Donald Trump at the Helm.
So he trained in the USA and took of that know and training back to China. And you wonder why we need to stop the Chinese from coming here for their education.
Read this part of the original post again: “From March 2017 to January 2025, he conducted research at the Princeton Plasma Physics Laboratory.” In other words, he contributed to research work in the Princeton Lab AFTER obtaining his doctorate in the US. His seven years of research work in the US from 2017 to 2025 benefited the Princeton Lab and, by extension, the US. He more than repaid his dues.
And he has taken the research paid for by the IS back with him to China. Not only has he taken his research, but he has taken the skills he has learned with him as well.
And the US University kept the Money ( International Tuition). Just like the US stole the cheap labour from China when making there products, and the USA stole the minerals from Africa , the USA stole Cheap labour from Africa by enslaving and breaking up African families and chain and shakal the Africans to use them as slave labour, after when Slavery was out dated the USA just try to eradicate the African Americans by imposing Jim Crow law, and Monroe Doctrine, and now making up Trumpster Doctrine, and writing up new racist laws targeting China like UNCLOS.And above all the USA stole the whole of America from The Real True Americans(Natives). The USA Stole Hawaii,Porto Rico, Modern day Panama, Texas from Mexico, now trying to Steal Green Land, and Canada and it's Rear Earth Minerals. It's about time USA have to be discipline and put in it's place and contained by the world, and US Convicted Criminal President Dumbold Trump have to really be contained in prison due his Criminal Charges, and his ongoing criminal acts and nonsense on tariffs-threat-terrorist towards the world.
The U.S. universities are ripping off students from all countries, including the USA.
He uses America to get what he wants and brings it over to China and you want me to be happy about it if he wants an education don’t come here and use the schools and then bring it to China. I’m not impressed.
核物理学家刘畅在美国生活了十多年后，离开普林斯顿大学，前往北京大学任职。刘畅的研究对实现聚变能的进程至关重要。
上个月，刘畅加入北京大学物理学院重离子物理研究所，担任助理教授。据其所在系社交媒体账号上的一则帖子显示。
刘畅于2011年7月获得北京大学物理学院学士学位，并于2017年2月获得普林斯顿大学天体物理系等离子体物理学博士学位。2017年3月至2025年1月，他在普林斯顿等离子体物理实验室从事研究工作，并于2025年2月加入北京大学物理学院。
刘畅的研究主要集中在等离子体物理和核聚变领域。 他尤其专注于解决与逃逸电子（一种能量泄漏）以及磁约束聚变装置中的其他高能粒子相关的物理问题。
1950年，华罗庚在香港写了一封告诫中国留美同学的公开信。他在这封长达万言的信中，情真意切地动员爱国的知识分子放弃国外的物质生活，投身祖国的怀抱尽一份力。他真诚地呼唤说：“朋友，梁园虽好，非我们久居之乡。归去来兮！” 为了抉择真理，我们应该回归，为了国家民族，我们应该回归，为了人民服务，我们也应该回归，就是为了个人出路，也应该早日回归，奠定我们工作的基础，为我们伟大祖国的建设和发展而奋斗！
华罗庚的忠言今天也适用
谷歌翻译：1950年，华罗庚在香港给留美中国学生写了一封公开信。 在这封千字信中，他真诚地动员爱国知识分子放弃国外优越的物质生活，投身到祖国的怀抱中尽自己的一份力量。 他诚恳地喊道：“朋友们，梁园虽好，但不是一个 久违的故乡。回来吧！为了选择真理，我们应该回去。为了国家，我们应该回去。为了服务人民，我们也应该回去。为了个人的出路，我们也应该尽快回去，打好基础，为伟大祖国的建设和发展而奋斗！
“华罗庚的忠诚，今天依然适用。”
好‼️人越多越好，祖国万岁‼️
刘也许不错，但绝不是完美或天才。
你能解释一下为什么你认为他是一个平庸的物理学家吗？至少在我看来，你不像朗道那样给物理学家打分。
他从来没说过平庸。
稻草人论证……别那样。
那又怎么样？他的心在中国，总比被定罪的唐纳德·特朗普总统掌权的美国强多了。
所以他在美国接受培训，然后带着这些知识和培训回到中国。你还想知道为什么我们要阻止中国人来这里接受教育。
再读一遍原文的这部分：“2017年3月至2025年1月，他在普林斯顿等离子体物理实验室进行研究。” 换句话说，他在美国获得博士学位后，为普林斯顿实验室的研究工作做出了贡献。他从2017年到2025年在美国进行的七年研究工作，使普林斯顿实验室受益，进而也使美国受益。他回报的远远超过了应得的。
他还把IS资助的研究项目带回了中国。他不仅带走了他的研究成果，还带走了他学到的技能。
而美国大学却拿走了这笔钱（国际学费）。 就像美国在中国生产产品时窃取了廉价劳动力，美国从非洲窃取了矿产一样，美国通过奴役和拆散非洲家庭、用锁链和捆锁将非洲人用作奴隶来窃取非洲廉价劳动力，当奴隶制过时，美国就试图通过实施吉姆克劳法和门罗主义来消灭非裔美国人，现在又编造特朗普主义，并针对中国制定新的种族主义法律，如《联合国海洋法公约》。最重要的是，美国从真正的美国人（原住民）手中偷走了整个美国。美国从墨西哥偷走了夏威夷、波多黎各、现代巴拿马、德克萨斯，现在又试图窃取绿地、加拿大及其后方矿产。 美国是时候自律了，该摆正自己的位置，接受世界的制约。美国那个被定罪的愚蠢总统特朗普，也应该被关进监狱，因为他的刑事指控，以及他持续不断的犯罪行为，以及他在关税、威胁和恐怖主义等问题上对世界的胡言乱语。
美国大学正在剥削包括美国在内的所有国家的学生。
他利用美国来得到他想要的东西，然后把它带到中国，你想让我为此感到高兴吗？如果他想要接受教育，就不要来这里，利用学校，然后把它带到中国。我对此很不满意。
Terms & Conditions have changed in recent years. Why stay in a foreign country when you are Not Welomed anymore or worst still! Regarded as a spy and being interrogated often.
Exactly!
Maybe America should invest more in education to have more domestic talent and highly-educated scientists and engineers? Anyway, he did help the US.
Okay where was he taking his highschool and becholer degreee education? Isn't the US benefiting from highschool/becholar education resources globally?
Or maybe he left because of RACISM against Chinese in America.
He came the US with dreams and hopes, and then he found out the truth about America, so he “divorced” America and left.
It happens with marriages: you marry someone and then find out the truth about him/her, so you divorce him/her.
Yea, just like Canada ( Close Ally) found out the White Supremacist Empire of USA is no fucking good so it's a divorce between Canada and USA. USA just want to Anex Canada and steel the country and it's rear minerals, like everything else the US steels,they even stole America from The Native Americans which are the Real Americans after they where welcome by the Native Americans. Even Stole Texas from Mexico, now want to steel Green Land and it's rear mineral resources, and stole Modern Panama from the Panamanians.The USA stole Hawaii, and Porto Rico, and set up Ukraine in there US Debt Trap and mistreated,looked down and disrespected the Ukraine President, the US treat the Ukrainian President like a poor street bagger and insulted his cloths that he was wearing at the Oval Office meeting. Now Ukraine is Trapped in a US debt. Ukraine have to pay the US with there land and rear minerals. Ukrainians lost there Rear Minerals to the USA, and 20 % of there land to Russia. Maybe Ukraine should not even attempt to join NATO the first Place , it's a Loose - Loose situation, don't count on the USA for any help in the name of Good Faith or Humanitarian reasons to save the country Ukraine, or any territory like Taiwan.
You think your Maggots in America have the intellectual capacity of these foreign students from China ? Even if you dont welcome them your own American students will not really flourish. Knowledge grows only with free flowing interactions. America will be a knowledge desert if it is closed to foreigners.
Talent travels for many reasons. I think the USA has benefited the most.
You would feel differently if you were the victim of the Page Act, Monroe Doctrine and all the other discriminatory policies practiced by the US. I bet you will feel homesick
Why did the US accept him in the first place and to Princeton at that. Maybe you need to find out why he left before being unimpressed.
Maybe he left due to experiencing the reminiscent of Jim Crow laws, like the African Americans did and probably still does experience from time to time, it's just that the African Americans have no home country to go to, but stay in Racist USA and endure the Racist attitudes from there White Counter parts.
America don’t educate for free. It’s big business and universities raked in billions of dollars from foreign students. Sure many students would like to stay after graduation for the better opportunities that are available in America. But ask yourself how are your government and your people treating them especially the Chinese.
So for their own good it’s better to return home where they can be be more appreciated!
He got the education for free?
And what do say to hundreds and thousands of foreign talents US has been preying on for decades!
近年来，条款和条件变了。既然你不再受美国欢迎，甚至更糟的是，你还留在国外干什么！你会被视为间谍，经常被审问。
没错！
也许美国应该加大教育投入，培养更多国内人才和高学历的科学家和工程师？总之，他确实帮助了美国。
好吧，他高中和本科都去哪儿了？美国不是从全球的高中/本科教育资源中受益吗？
又或许，他离开是因为美国存在针对华人的种族主义。
他怀揣梦想和希望来到美国，然后发现了美国的真相，于是他“离婚”了，离开了美国。
婚姻就是这样：你和某人结婚，然后发现了他的真相，于是你和他离婚了。
是啊，就像加拿大（亲密盟友）发现美国白人至上主义帝国根本不好，所以这等于加拿大和美国“离婚”。 美国只想吞并加拿大，掠夺其后方的矿产资源，就像美国掠夺其他一切东西一样，他们甚至从美洲原住民手中偷走了美国，而美洲原住民欢迎美国之后，他们才是真正的美国人。他们甚至从墨西哥手中偷走了德克萨斯，现在又想掠夺格陵兰及其后方的矿产资源，从巴拿马人手中偷走了现代巴拿马。美国偷走了夏威夷和波多黎各，把乌克兰置于美国债务陷阱中，虐待、瞧不起和不尊重乌克兰总统，美国把乌克兰总统当作一个可怜的街头乞丐，侮辱他在椭圆形办公室会议上穿的衣服。现在乌克兰深陷美国债务泥潭。乌克兰必须用他们的土地和后方矿产来偿还美国债务。乌克兰人把他们的后方矿产输给了美国，20% 的土地输给了俄罗斯。 乌克兰或许根本就不应该试图加入北约，这是一个“松散”的局面，别指望美国会以善意或人道主义的名义提供任何帮助来拯救乌克兰，或者像台湾这样的任何领土。
你以为你们美国的“蛆虫”们拥有这些来自中国的留学生的智力水平吗？即使你们不欢迎他们，你们自己的美国学生也不会真正蓬勃发展。知识只有在自由互动中才能增长。如果美国对外国人关闭大门，它就会变成一片知识荒漠。
人才流动的原因有很多。我认为美国受益最多。
如果你是美国“佩奇法案”、门罗主义以及所有其他歧视性政策的受害者，你的感受会有所不同。我敢打赌，你会想家的。
美国当初为什么接受他，而且是去普林斯顿大学？也许你需要先弄清楚他离开的原因，然后再对他不以为然。
也许他离开是因为经历了类似吉姆·克劳法的痛苦，就像非裔美国人曾经经历的，而且可能现在仍然时不时地经历着，只是非裔美国人没有祖国可去，只能留在充满种族歧视的美国，忍受来自白人的种族主义态度。
美国的教育并非免费。大企业和大学从外国学生身上赚取了数十亿美元。当然，很多学生毕业后想留在美国，寻求更好的机会。但问问自己，你们的政府和人民是如何对待他们的，尤其是中国人。
所以，为了他们好，最好回到能得到更多赏识的祖国！
他接受了免费的教育？
你对美国几十年来一直掠夺的成千上万的外国人才说了什么？
America sells education to international students for 3 times the price, America gets the money and say the International students from China steels there education and go back home and you want them to be happy about it. If the US wants customers when selling there Education, don't promote and boast about your shit knowledge so call education and use the international students and take there money , you got your price the education that you are pedaling was bought and paid for and the customer can go where ever they want like China. I am not impressed by the hypocrites of USA on all matters, let's face it the USA are poor losers, and are all dummies , like the Convicted Criminal Sex maniac Present Trump. Only the Trumpanese would think like you, you must be a Trumpanese. Cheers for Great freedom Non dictatorial CHINA, Fuck the Fucked up Trumpanese and the Fucked Up Non Freedom loving-Hypocritical, Dictatorial “Communists-Fascist- White Supremest-Racist-” USA, Dictated by the Dictator Convicted Criminal President Dumbold Trump and his “Musk”ateers and the Trumpanese side kicks , and puppet vasal states.
China enticed him back… K
Yeah, he’s left clusterfuck of America for greener pastures.
He belongs to a dying breed. The Americans will clamp down on PRC students seeking advance studies in the US. That’s in keeping with technology sanctions imposed by the last two administrations. The exclusionist policy is expected to extend for a long, long time as the two countries enter a period of distrust and enmity reminiscent of the Cold War.
Excellent
Perhaps Mr Liu would be an ideal ambassador not for China, nor for the US but for SCIENCE. Since he has had a foot in both camps, he could bring his knowledge together from both countries, share it with others to enable mankind to benefit.
I think someone should give him the 3-body problem 😃
Hope mankind can learn what he can achieve in the future. ✌🏼
We are similar ethnicity people living together in this world and should be helping each other. How are you thinking in such manner to not help and share knowledge. Also, it is thankful that others like each other including the culture. That selfishness and racism in the way you and others think, is the problem in this world, which originates from the one different ethnicity of the negros and their accumulated over populated dominant negro traits features mix people that are the racists, capitalist, defilers and crimes against humanity. This lifestyle and system is not normal including the integration of the negros which they still force inter ethnicity relationships sexual with births of their mix children defilements that is in truth, not wanted. It is such stubbornness of the negros and their controlled possessed dominant traits features mix people of some of the two light similar ethnicity people, that they should not control when they are the different and dark ethnicity causing dangers and hostaging as per the many problems of these in history and still! They are not only different in ethnicity but their violent, abusive, savage, cruel beyond belief/normal and intrusive with no respect for people, especially of the light two similar ethnicity people that are not their people and not their/our family when it was forced.
美国以三倍的价格向国际学生出售教育，美国得到了钱，然后说来自中国的国际学生偷窃了他们的教育然后回国，你希望他们对此感到高兴。如果美国在出售教育时想要客户，就不要宣传和吹嘘你的狗屎知识，所以不要叫教育，利用国际学生拿他们的钱，你得到了你的价格，你所兜售的教育是买来的，客户可以去任何他们想去的地方，比如中国。我对美国在所有问题上的伪君子印象不好，让我们面对现实吧，美国是可怜的失败者，都是傻瓜，就像现在被定罪的性狂犯特朗普一样。只有特朗普主义者才会像你一样思考，你一定是特朗普主义者。 为伟大的自由、非独裁的中国欢呼，操他妈的特朗普政府，操他妈的不热爱自由、虚伪、独裁的“共产主义者-法西斯主义者-白人至上主义者-种族主义者”的美国，被独裁者、被定罪的愚蠢总统特朗普和他的“麝香”党、特朗普的追随者和傀儡附庸国所支配。
中国把他引诱回来了……K
是啊，他离开了美国，去寻找更广阔的天地。
他属于一个正在消亡的种族。美国将严厉打击寻求在美国深造的中国学生。这与前两届政府实施的技术制裁如出一辙。随着两国进入一个令人联想到冷战时期的不信任和敌意时期，预计这种排他性政策将持续很长一段时间。
太棒了
或许刘先生是一位理想的科学大使，他既不是中国大使，也不是美国大使。他涉足两个阵营，可以将两国的知识汇聚在一起，与他人分享，造福人类。
我觉得应该有人给他出个三体难题😃
希望人类未来能学到他能取得的成就。✌🏼
我们是生活在这个世界上的同族人，应该互帮互助。你怎么会这样想，不互相帮助，不分享知识呢？而且，值得庆幸的是，人们彼此欣赏，包括文化上的差异。你和其他人认为的自私和种族主义，才是这个世界的问题所在，它源于黑人这个不同的种族，以及他们人口过剩、日益累积的黑人主导特征，最终导致他们变成了种族主义者、资本主义者、污秽者和反人类罪犯。 这种生活方式和制度是不正常的，包括黑人的融合，他们仍然强迫跨种族关系、性关系和混血儿的生育，而这实际上是不想要的。正是黑人的顽固和他们控制的主导特征，使一些人混血于两个相似的白皮肤人种，以至于当他们是不同的、黑暗的种族时，他们不应该控制他们，制造危险和人质，就像历史上和现在的许多人一样！他们不仅种族不同，而且暴力、虐待、野蛮、残忍到难以置信/正常、侵扰他人，不尊重他人，尤其是那些不是他们人民、也不是他们/我们家人的、两个相似的白皮肤人种的人，当他们被强迫时。
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