Core Viewpoint - The traditional Bai Ku Yao spinning top, a cultural heritage sport, is experiencing a revival through innovative practices and community engagement, led by representative inheritor He Guangbin [1][2][3]. Group 1: Cultural Heritage and Tradition - The Bai Ku Yao spinning top has a history of several hundred years and is an essential traditional sport during festivals, loved by the local community [1]. - The spinning top is handcrafted from high-quality wood, weighing between 2 to 3 pounds, and is accompanied by a whip made from wild vines or hemp rope [2]. Group 2: Challenges and Innovations - The spinning top tradition faced decline as fewer people practiced it, particularly with younger generations moving away for work [2]. - He Guangbin has innovated the practice by developing a new performance style that incorporates spinning on various body parts, and he has established a spinning top processing factory and a cultural heritage exhibition hall [2]. Group 3: Revival and Community Engagement - Since being listed as a representative project of intangible cultural heritage in Guangxi in 2014, the spinning top sport has attracted more tourists, integrating traditional sports with rural tourism [3]. - He Guangbin has become a popular coach, teaching visitors and students, thus fostering a new generation of practitioners and ensuring the continuation of this cultural tradition [3].

Core Viewpoint - Long-term stock price decline of Langkun Technology has raised investor concerns, with significant shareholder sell-offs and questions regarding the company's management and future prospects [1][2][3]. Stock Performance - Since its listing in 2023, Langkun Technology's stock has fluctuated between a high of 29.27 CNY and a low of 11.65 CNY, remaining below the issue price of 25.25 CNY for most trading days [2]. - As of May 28, 2023, the stock closed at 17.87 CNY, down 0.72%, continuing its trend of being "below par" [4]. Shareholder Actions - In the first quarter of 2023, several shareholders, including Guizhou Peishuo and Shenzhen Huadi, collectively reduced their holdings by nearly 600,000 shares [3]. Management's Response - The management attributed the stock's low performance to various factors, including market conditions and industry trends, asserting that the stock does not reflect the company's intrinsic value and growth potential [3]. - The company plans to enhance its core competitiveness through improved performance, technological innovation, and market expansion, while also focusing on investor relations to better communicate its value [3]. Financial Performance - Langkun Technology has experienced significant fluctuations in revenue growth from 2020 to 2024, with revenue growth rates of 43.29%, 44.12%, 12.35%, -3.61%, and 2.18% respectively [5]. - Net profit growth rates during the same period were 83.15%, 48.31%, 6.34%, -26.26%, and 20.51% [5]. Business Segments - The company's main business areas include organic waste treatment, municipal solid waste management, and environmental engineering, with a recent focus on biomass resource regeneration and synthetic biology manufacturing [5][6]. - The revenue share from organic waste treatment has changed significantly, with its contribution peaking at 84.71% in 2023, but not reported in the 2024 revenue structure [7]. Regional Performance - The South China region, which contributes 80% of the company's revenue, has seen a decline in revenue growth, with rates of -12.64% and -25.82% in 2023 and 2024 respectively [7]. - Revenue from the Guangdong region, a key area for the company, has decreased from 15.55 billion CNY in 2021 to 11.21 billion CNY in 2024 [7].

研究团队发现，这里的钌同位素特征与在地壳其他区域观察到的特征存在显著差异。这一结果与人们对 地球地质历史的预期一致。地核形成于40多亿年前，而地幔和地壳则包含大量后来被陨石撞击产生的物 质。这意味着这些不同区域具有独特的同位素浓度，这可以从地核与地幔、地壳间的差异上反映出来。 但论文作者之一、德国哥廷根大学的地球化学家Matthias Willbold指出，这些早期的同位素线索"并非确 凿无疑"。"氦和氢并不是地核的特定元素，它们也可能是地幔的一部分。" 为了寻找更有说服力的证据，Willbold与合作者将研究重点转向钌—— 一种已知富集在地核中类似铂的 稀有金属。他们测量了夏威夷岩石样本中原子量为100、101和102的钌原子的相对含量。 Willbold表示，这里是寻找可能源自地幔最深处的岩石的理想地点，因为夏威夷群岛是由一个"热点"产 生的，那里的岩浆被认为源自地幔最深处，并穿透地壳喷发而出。 为获得准确数据，论文通讯作者、哥廷根大学的地球化学家Nils Messling改进了从岩石样本中提取微量 钌的技术，然后利用质谱仪进行分析。"预期差异是如此之小，以至于此前的分析方法无法捕捉到这种 信号。" 来源 ...

Core Viewpoint - The rising popularity of "Nian Nian" stress-relief toys has been overshadowed by safety concerns following a cancer diagnosis from a prominent creator, leading to increased scrutiny over the toys' safety standards [1][2][5] Group 1: Product Popularity and Market Presence - "Nian Nian" toys have gained significant traction among young consumers due to their appealing design and soft, squishy texture, becoming a trending topic on social media [5] - Many stores on major e-commerce platforms report thousands of purchases, with prices ranging from a few to several dozen yuan [5] Group 2: Safety Concerns and Testing Results - SGS testing revealed that several popular "Nian Nian" toys contained harmful substances exceeding safety limits, with one sample showing a phthalate content 26% above the allowable level [8][9] - Four out of seven tested toys had total volatile organic compounds (TVOC) levels exceeding the standard, with two samples showing concentrations of 29,960 μg/m³ and 21,640 μg/m³, which are over four and two times the limit, respectively [12] - The presence of small parts and labeling issues was noted, with four samples lacking necessary age warnings and safety risk labels [15] Group 3: Health Implications of Harmful Substances - Phthalates, commonly used as plasticizers, can pose health risks, particularly to children, potentially leading to endocrine disruption and developmental issues [8] - Excessive exposure to TVOC can impair the immune system and affect the central nervous system, causing symptoms such as dizziness and chest tightness [11] Group 4: Recommendations for Consumers - Consumers are advised to check for mandatory national standards and 3C certification when purchasing "Nian Nian" toys to ensure safety compliance [16] - It is recommended to use these toys in well-ventilated areas and to wash hands after use to minimize health risks [16]

研究人员进一步发现，未被回收的PET饮料包装大多流入了厨余垃圾处理厂、垃圾填埋场、垃圾焚烧 厂，甚至有部分散落在海滩等自然环境中，其中垃圾焚烧厂是流失的PET饮料包装最大"出口"。通过逆 向核算，扣除这些流失的部分，其回收率在96.86%—97.63%之间。综合正、逆向"双线"核算，我国PET 饮料包装回收率已高达96.48%—97.63%，相当于每年超过430万吨的饮料瓶实现了正规渠道回收利用。 多方合力推动提升回收率 "在废弃塑料中，PET塑料瓶是回收率最高的产品，再生PET瓶片也是最成熟的再生塑料产品。"宁夏银 川某环境科技有限公司总经理李双平告诉记者，"回收后的瓶子，需要进行拆包、分类、滚筛、脱标、 色选、破碎、清洗等工序，破碎后的塑料瓶薄片将浸泡在工业洗涤槽中，然后通过沉浮分离箱内的桨轮 系统进行混合，像瓶盖、标签纸这样低密度的塑料会漂浮在水面上，其他塑料则会沉积到底部。" 据了解，再生PET材料可广泛应用于服装面料领域，这是目前应用最多的领域。再生PET粒料经"瓶到 瓶"回收工艺可用于生产食品级包装容器。此外，PET瓶回收料可以制备非结晶PET片材、包装用带材、 波纹形遮阳蓬等。再生PET经玻璃纤 ...

Group 1 - The 21st Shenzhen Cultural Expo features various intangible cultural heritage performances, attracting a large audience and promoting local arts [1][2] - The Shaanxi Pavilion showcases traditional arts such as Shaanxi storytelling and Xunyi colored paper-cutting, emphasizing the importance of innovation in cultural heritage [1][2] - Children actively participate in hands-on experiences with traditional crafts, enhancing their understanding of regional history and culture [2][3][4] Group 2 - The event highlights the significance of preserving and innovating intangible cultural heritage, as expressed by the representatives of various art forms [2][3] - Local artists, such as Gao Zhengfeng and Wu Qiaoling, share their knowledge and skills with the younger generation, fostering a connection between past and present [1][2] - The initiative aims to educate children about diverse cultural practices across China, promoting appreciation for traditional arts [4]

央视网消息（新闻联播）：山西是中华文明发祥地之一，众多古建矗立在三晋大地表里山河。位于山西太原的晋祠是我国现存规模最大、 跨越时代最久远、保存最为完整的唐宋祠庙式古典园林，对于研究古代建筑、雕塑碑刻等具有重要的历史和艺术价值。今天（5月25日）的 《文化中国行》，我们一同走进晋祠，感受绵延千年的中华文化之美。 圣母殿前檐八根廊柱上姿态各异的龙是我国现存最早的木雕盘龙。殿内保存着43尊宋代彩绘泥塑，写实且传神，其中33尊侍女像最为精 美，它们如真人大小，有的奉文印翰墨，有的负责洒扫梳妆、奏乐歌舞，各司其职，对研究宋代宫廷生活、衣冠服饰和彩塑艺术的发展具 有重要价值。 此外，晋祠唐碑亭内的"镇馆之宝"记录了唐王朝初创时期的壮志豪情。 西周柏树、唐代碑刻、宋代殿堂、明代牌坊，一处处古树古建，承载了延续千年的三晋历史文脉，留下了丰厚的文化宝藏。 晋祠博物馆持续开展文物建筑的预防性保护和数字化保护工作，保存文物悠久的历史信息，在这里还能领略非物质文化遗产的风采，从明 清以来延续至今的晋祠庙会每年农历七月举办，2008年被列入国家级非物质文化遗产。依托历史文化优势，晋祠博物馆经常性举办系列文 化活动，让人们在沉浸式体验中 ...

从十年"飞天"备战期间的种种极限挑战，到飞船发射时承载的巨大生理负荷，到太空俯视地球的奇妙体 验，再到天宫课堂里的趣味实验……航天员叶光富娓娓道来的讲述里，不但再现了载人航天的诸多幕后 故事，也再现了坐在石板上看飞机的少年成长为航天英雄的奋斗人生。"星光不问赶路人，时光不负有 心人，只要坚持脚踏实地，奋力拼搏，仰望星空的梦想，一定能成为摘星星的现实。"叶光富说。 新华社成都5月24日电（记者李力可、胥冰洁）在地下2400米的深度如何观测宇宙？中国高铁为何能跑 出世界第一的运营速度？脑机接口未来是否能人人接入？……5月24日，第二十五个全国科技活动周到 来之际，在四川成都举办的一场全民科普互动宣传活动上，上海交通大学钱学森图书馆馆长钱永刚、航 天员叶光富、清华大学工程物理系教授岳骞等科学"大咖"登台演讲，讲解科技前沿话题。 成都科幻馆举行的科学大讲堂现场。新华社记者 胥冰洁 摄 而在中国科学院院士翟婉明心中，从绿皮车厢的拥挤记忆到高铁时代的技术攻坚，科学技术的发展彻底 改变了中国人的出行方式，提升了群众的生活品质。 对宇宙的探索，不止发生在"天宫"。在四川雅砻江锦屏大河湾地下2400米处，藏着世界埋深最深、空间 ...

每经记者｜张静 实习生 杨乐 西安 每经编辑｜贺娟娟 在西安市长安区兴隆街办北张村，68岁的马松胜守着一帘一纸，把52年的光阴浸在楮皮与溪水的絮语里。 他常说自己是"笨人"，初中毕业便跟着父亲学造纸，从17岁到68岁，双手在石灰水里泡出老茧，在纸墙上贴出裂痕，却把一门西汉传来的手艺，熬成了国 家级非物质文化遗产。 家艺耀奥运 1971年，马松胜的父亲用"家有万贯，不抵薄艺在身"劝他学艺时，或许想不到这门"薄艺"会让儿子在37年后走进北京奥运会。 2008年，他在陕西"祥云小屋"展示古法造纸，却因客流太大常被限制操作，前门进后门出的观展动线里，人们难有驻足的耐心。只有一些记者和领导来访 时，他才能捞起纸帘，让雪白的纸浆在帘上匀开。那一个月，大家的目光都落在他的纸帘上。 楮纸循时节 马松胜的造纸坊里，时间按工序流转。春天砍楮树扒皮，夏天在河水里泡瓤，秋天踏碓捣浆，冬天在土墙上贴纸。这门传承两千年的手艺，每一步都跟着 节气走。蒸皮要等伏天的烈日，化瓤得用活水的溪流，连贴纸的墙面都分"夏五冬二"——夏天一天能贴五墙，冬天两天晒一墙。 最考人的是抄纸。纸帘在木槽里"人借水势，水借人力"，手腕轻抖三分，纸浆便匀成薄如蝉翼 ...

Group 1: Core Concepts of Antimatter - Antimatter is a mirror image of ordinary matter, where each particle has a corresponding antiparticle with opposite charge [2][3] - The discovery of antimatter dates back to the early 20th century, with significant milestones including the prediction of positrons by Paul Dirac in 1928 and the first observation of positrons by Carl Anderson in 1932 [3] - Recent advancements in antimatter research include the successful observation of antihydrogen-4 by Chinese scientists in 2024, marking a significant breakthrough in the field [3] Group 2: Research Objectives - One primary goal of antimatter research is to address the baryon asymmetry problem, which questions why the universe is predominantly composed of matter despite equal amounts of matter and antimatter being produced during the Big Bang [4] - Another objective is to test the applicability of physical laws to antimatter, particularly the equivalence principle of general relativity, which posits that all objects respond to gravity in the same way [5][6] - A third goal involves studying dark matter and its potential counterpart, "antidark matter," which could provide insights into the origins of observed antimatter in the universe [7] Group 3: Practical Applications - Antimatter has practical applications in medicine, particularly in positron emission tomography (PET), which utilizes positrons for high-precision imaging of metabolic processes in patients [8] - Research on antiprotons has been conducted to explore their effectiveness in cancer treatment, with findings suggesting that antiprotons can more efficiently destroy cancer cells while minimizing damage to healthy cells [9] - Antimatter also holds potential as a clean energy source, with energy density estimates indicating that it could be 10 billion times greater than traditional fossil fuels, making it a candidate for future energy solutions [10] Group 4: Future Prospects - Theoretical applications of antimatter in space travel suggest that antimatter propulsion systems could achieve speeds up to 15% of the speed of light, revolutionizing interstellar exploration [10] - Despite the challenges in producing and storing antimatter, ongoing research aims to overcome these obstacles, potentially leading to significant advancements in both energy and space travel technologies [10]