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已调整 27 次：闰秒有望退出历史舞台，明年改为推行闰时_我的网站

A |      8 月 25 日消息，国际计量局（BIPM）官宣将于 2026 年 10 月在法国凡尔赛国际会议中心举办第 28 届国际计量大会（CGPM），将讨论用闰时取代闰秒，并规划 2027 年 5 月开始推行。注：闰秒由国际计量局（BIPM）于 1972 年引入，截至目前已修改 27 次，目的是让世界协调时（UTC）与地球自转速度逐渐减慢相匹配。协调世界时（UTC）基于用原子振动实现的高精度原子钟来确定，成为 1 秒长度的标准。         

    A display of humanoid fighting robots at robotic firm EngineAI's intelligent manufacturing base in Robot Valley in Shenzhen, South China's Guangdong Province on August 5. Photo: Li Xuanmin/GT
Editor's Note:
The outline of the 15th Five-Year Plan called for building a modern industrial system, consolidating the foundation of the real economy, and accelerating high-level technological self-reliance and self-strength to lead the development of new quality productive forces. These goals have provided clear direction for industrial transformation and upgrading across various sectors, while injecting strong momentum into high-quality development.
The Global Times has launched a new column titled "China Industry Close-up." Focusing on the creation of a new development pattern, the column will delve deeply into vivid examples of industrial transformation and upgrading across various sectors, aiming to showcase China's innovation-driven and high-quality development. This is the first half of the second installment of the series
Cao Jing, a truck driver based in Shenzhen, South China's Guangdong Province, carefully secured a humanoid robot at the research and development center of a local robotics company on Friday. With steady hands, he and other technical staff first folded the robot and placed it into a black box filled with cushioning pads, then moved the box into the back of his 4.2-meter-long truck, adjusting the straps and padding to keep it steady for the journey. Once everything was firmly in place, he climbed into the cab and set off along the Liuxian Road in Shenzhen's Nanshan district.
Half an hour later, he arrived at the Shenzhen Nursing Home, where the robot would soon begin its new role -serving as a cheerful companion for the elderly while continuously improving itself through daily real-scenario applications.
Cao, a driver for freight company Huolala's enterprise service, told the Global Times that since March and April, he can get four or five such delivery orders a day during peak times, mostly around Liuxian Road, a sharp increase from last year. "The robots I transport have also become much more diverse — from company R&D prototypes and household robots being delivered to customers' homes for testing, to robots designed for all kinds of competition, and even those fighting robots that compete in the octagon," Cao said as he waited at a traffic light on Liuxian Road.
The Liuxian Road is located within the 30-minute supporting circle in Shenzhen's "Robot Valley," an idea that Chinese official highlighted at the 2026 Summer Davos in June. 
Just a decade ago, some of this area was little more than old industrial zones, construction sites and urban villages. Today, the Robot Valley — stretching about 10 kilometers along Liuxian Road and covering an area of approximately 28 square kilometers — has transformed into a thriving hub. The corridor is lined on both sides with robot makers, component suppliers, software algorithm firms, as well as universities and research institutions.
The area is now home to over 200 companies across the robotics industrial chain, including more than 25 humanoid robot complete-machine manufacturers, 32 specialized and sophisticated "little giant" enterprises, and 15 listed companies, according to local authorities.
Walking through parts of the valley now feels like stepping into a sci-fi film, where it is common to encounter a "blinking" humanoid robot waving hands around the corner, watch a lively parade of dancing robot dogs and sip a coffee made by humanoid robot, or enjoy a dish prepared by robotic arms.
The rise of this high-tech futuristic valley offers a glimpse into the prowess of China's embodied artificial intelligence (AI) industry, one of the industries of the future identified in China's 15th Five-Year Plan (2026-30) that has drawn intensive global limelight. The valley also epitomizes China's homegrown innovation capabilities, where milestone technological breakthroughs, coupled with rapid iteration, complete industrial chains, and real-world application scenarios converge to turn cutting-edge research into tangible products at remarkable "Chinese speed."
'Half-hour circle'

When Global Times reporters visited Shenzhen robotic firm EngineAI's intelligent manufacturing base in the Robot Valley, several humanoid robots were effortlessly demonstrating high-difficulty moves such as front flips. Some of the T800robots, just backed from the Ultimate Robot Knock-out Legend (URKL), or what organizers billed as the world's first free humanoid robot fighting competition in July, were "battered and bruised." 
"In robot combat, we must always be prepared for high-intensity real-world testing," Li Hao, a motion control algorithm engineer at EngineAI, told the Global Times. "Real combat takes place in a continuous, highly uncertain environment full of interference. The real challenge is ensuring that humanoid robots can continuously maintain stability under complex conditions such as moving, turning, punching, absorbing force, and shifts in the center of gravity. In this context, the pace of research and development (R&D), testing, and adjustment is particularly fast — which is why the half-hour industrial circle matters so much to us."
Li gave a vivid example of how his daily routine fully leverages the valley's tight integration of R&D, testing, and manufacturing.
"In the morning, I finish modifying the algorithm at the R&D center. A 25-minute drive then takes me to the production line at the valley's Honghualing manufacturing base for real-machine testing. By the afternoon, I can rush back to the R&D center to upgrade and optimize the algorithm again," he explained.
Since March, Li has been taking Muay Thai lessons together with other core engineers. While he has grown into something of a "Muay Thai master," this proximity of the Robot Valley also allows him to "communicate with robots" every day, optimizing intelligent recognition algorithms and motion strategies based on their performance in real combat. "This is like teaching a baby, and we're training the robots to grow stronger while becoming smarter, day by day," he noted.
Throughout the robot manufacturing, another critical step — robot prototyping — further highlights the unique strength of China's robotics industry.
Pang Jianxin, vice president of UBTECH, a Hong Kong-listed humanoid robot company also headquartered at the Robot Valley, told the Global Times that the valley holds a clear advantage in rapid prototyping and fast product iteration — an edge that "leads the world."
"During prototyping, the volume for production is usually very small, and many companies are reluctant to take on such orders. However, in Shenzhen and the broader Pearl River Delta, there are a large number of supply chain enterprises that are willing to accompany start-ups on new tracks and new products. Based on the design, they can leverage their experience to select suitable materials or processes, quickly complete sample manufacturing, and then rapidly verify the results. This is crucial for hardware R&D, especially for innovative hardware and intelligent robots," Pang explained.
In overseas markets such as the US, the typical process from turning an idea into a physical product, to producing samples and entering the small-scale market, and finally reaching mass production and making debut, could take five-to-ten times longer than the Chinese counterparts, Liu Shaoshan, director of the Embodied AI at the Shenzhen Institute of Artificial Intelligence and Robotics for Society, told the Global Times. Liu has worked in the US for a bunch of years before returning to Shenzhen two years ago.
"Robotics is an industry where speed almost decides everything - as half of it is manufacturing, and the other half is about R&D," Liu told the Global Times. 
According to Liu, in the US, it can take a week just for industrial chain communication to implement a hardware change or upgrade, and most of their suppliers are located outside the country, which further delays the process. By contrast, the complete supply chain of Shenzhen's Robot Valley enables highly efficient communication — "in some cases, suppliers can even arrive on site within half an hour."
The Global Times also noticed a telling scene during its week-long visit to Shenzhen's Robot Valley: the company visited on the first day turned out to be the exact supplier of the company visited on the second day, while the third-day institute was itself a key testing partner of the second-day company — further underscoring the tightly integrated industrial ecosystem that makes rapid iteration possible.
For embodied intelligence manufactures, the Robot Valley is home to a full range of upstream suppliers — from perception systems such as tactile sensors and LiDAR, to actuation systems including servo motors and joint modules, and core components like robotic arms and dexterous hands. Meanwhile, downstream, large-scale manufacturers in the auto, new energy and electronic industries stand ready to put these robots into broader real-world applications, industry insiders noted.
"Many of the embodied robotics companies in the valley are our customers. Some of them — such as UBTECH, X Square and PUDU — are within a 20-minute drive of our headquarters. It is not an exaggeration to say that if you want to build a robot in Shenzhen's Robot Valley, you can easily find the suppliers you need nearby," Zhao Qiyu, marketing director of publicly listed robotics and AI vision company Orbbec, told the Global Times.
Meanwhile, as China's robotics industry continues to expand, downstream customers are developing increasingly specialized and specific requirements, encouraging companies like Orbbec to launch new products that address these evolving needs, Zhao said. 
She cited one of the company's newly launched products, EGO, a head-mounted data collection device designed to capture first-person perspectives and real-world task flows. By collecting multimodal data related to environmental semantics, spatial scale and long-horizon task chains, the device helps generate high-quality training data for downstream embodied AI model companies.
'DeepSeek' moment in robotics industry

Pang from UBTECH recalled firsthand how he has witnessed the drastic change in Shenzhen's Robot Valley and the broader picture of the Chinese robotic industry during the past 10 years.
"When we started the company a decade ago, what we saw from the window was just old industrial base, some construction sites and villages. We were like marching through a dark desert, where even the positions of the stars and the moon could not be seen clearly," Pang said. 
He noted that at that time, the most well-known robotics companies on the international stage were the US-based Boston Dynamics, which wooed the world with its signature backflips and parkour moves, and Honda from Japan, whose humanoid robot ASIMO became a global icon. In the Chinese market, domestic companies specialized in humanoid robots "were extremely scarce."
However, a decade later, China's robotics industry has undergone what industry insiders described as "transformative changes," shifting from a follower to a frontrunner. The once "valley of entrepreneurship" has also transformed into a world-class "highland of innovation," Liu Zhufu, deputy general manager of Dobot Robotics, which was founded in 2015, told the Global Times.
Today, China has firmly established itself in the world's first tier of the robotics industry, with Chinese robotics companies having increasingly become a must-visit destination for foreign heads of state during their trips to China - as vividly exemplified by Slovak President Peter Pellegrini's tour of a robotics mall in Beijing's Yizhuang in July and President of Myanmar Min Aung Hlaing' visit to the Unitree Robotics in June.
According to data released by Beijing CCID Publishing & Media Co, China accounted for 84.7 percent of global humanoid robot shipments in 2025, meaning that for every 10 humanoid robots sold worldwide, more than 8 carried the "Made in China" label.
The institute Liu Shaoshan works for has also received a number of officials from Europe, including former UK Foreign Secretary Yvette Cooper, as well as corporate delegates from Europe, Japan and South Korea in recent months. 
"Many foreign visitors, during their inspections in Shenzhen, would ask me similar questions — why have cutting-edge technologies such as AI and embodied intelligence developed particularly rapidly in China? What can they learn, and what role should their governments play in accelerating this development?"
The answers, according to Liu, lie not in a single technological breakthrough, but in a combination of long-term strategic planning, industrial cultivation, and ecosystem building. "It is precisely thanks to the forward-looking layout and top-level design that China has gradually formed a complete chain spanning basic research, core technology breakthroughs, and industrial applications, while gaining a first-mover advantage in the real-world deployment of robots," Liu stressed. 
"China has been promoting the development of the humanoid robotics industry with unprecedented strategic resolve. And the inclusion of intelligent AI into the 15th Five-Year plan (2026-30) carries a lot of significance: it is not only a policy dividend but also offers long-term strategic guidance. It will guide more resources toward core technology breakthroughs and industrial ecosystem building, accelerating the process of humanoid robots moving from the laboratory to factories and into households," Pang said. 
When it comes to the local practice echoing this top-level design, the authorities in Shenzhen's Nanshan District have so far opened a total of 68 public scenarios for robot applications, aiming to open up the full chain of "technology R&D - scenario verification - commercial promotion," the Global Times learned.
Encouraged by these developments, industry insiders in the Robot Valley are increasingly optimistic that a "DeepSeek moment" for China's homegrown robotics industry may arrive sooner rather than later.
This moment may not come in a single instant, but a process accumulated from countless "world's firsts" - fueled by continuous homegrown technological breakthroughs and the constant expansion of application scenarios across China.
"Maybe one day, robots will be able to produce robots right here in our manufacturing base—that could be a defining 'DeepSeek moment'," Yao Qiyuan, co-founder of EngineAI, told the Global Times.
。不过由地球自转时间决定的 1 天长度会发生不规则变化，因此会产生偏差。地球的自转速度根据潮汐涨落以及地球内部地核运动而波动。地球的一天即地球自转一圈，大约需要 86,400 秒。闰秒的作用就是调整与原子钟的偏差，当偏差累积即将超过 0.9 秒时，就会在一天中增加 1 秒。闰秒需要经常性修改，会导致混乱，而引入闰时后数百年内无需修改。

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Published on:15:15:07