Shenzhou-18 Astronauts Return Home with Changed Appearances: What Impact Does Space Life Have on the Human Body?The Shenzhou-18 manned spacecraft successfully returned to Earth in the early morning of November 4, 2024, bringing three astronauts, Ye Guangfu, Li Cong, and Li Guangsu, back to Earth after a six-month-long space journey. However, CCTV News reported that the three astronauts' appearances had drastically changed after returning to Earth...

Nobel Prize Awarded to AI, Zhihu Explodes: Physics Doesn't Exist?The 2024 Nobel Prize in Physics was awarded to John J. Hopfield and Geoffrey E...

Why Doesn't Apple Take a Cut from 12306 Online Ticket Purchases? What's Behind the Power Play?Apple's announcement that it will not charge any fees for the 12306 online ticket purchasing app has sparked widespread discussion. As a global tech giant, Apple's AppStore commission policy has always been controversial...

QR Code Payment: China's Rapid Rise, Why Does it Lag in Europe and the US?A Gradually Accepted "New Life"WeChat astutely identified the market potential of QR code payment, leveraging its vast user base and social attributes to introduce its own QR code payment function. With Alipay and WeChat spearheading the movement, QR code payment gradually entered the public consciousness...

How Much Electricity Does an Air Conditioner Use in One Night at 26 Degrees Celsius? Cheaper Than a Popsicle? Summer is in full swing, and air conditioners have become essential life-saving devices for many households. Coming home, turning on the AC and being enveloped in cool breezes, the days weariness seems to vanish...

Why does China use iron instead of stainless steel for its railway tracks?China's railway construction, from the birth of the Shanghai Public Tramway in 1861 to the nationwide railway network today, has spanned over a century, witnessing technological advancements and the changing times. Throughout this long development process, the materials used for railway tracks have evolved from cast iron to steel and then to high manganese steel...

Tesla "Returns" Tom Zhu, Why Does Musk Value the Chinese Market So Much?Elon Musk, CEO of Tesla, has once again made a surprising move by "returning" his trusted lieutenant, Tom Zhu, to China, sparking widespread attention. What makes Zhu, who Musk calls the "king of rolling up his sleeves," so extraordinary? Why does he receive such high regard from Musk? Can he once again save Tesla's Chinese market upon his return? Let's delve into the story behind this "firefighting hero" of Tesla...

Why Does the Qinghai-Tibet Railway Still Use American Locomotives? When Will Domestic Locomotives Be "On Duty"?The Qinghai-Tibet Railway, spanning the Qinghai-Tibet Plateau and known as the "Roof of the World", has been in operation for 18 years since its opening in 2006. This railway, considered a marvel of Chinese engineering, connects Xining and Lhasa, bringing once-inaccessible Tibet closer to mainland China...

Does Restarting Your Router Daily Actually Help? Unlocking the Secrets Behind Slow Internet!Li Auntie, who lives in Garden Community, has been plagued by internet woes lately. Every morning, she calls customer service, anxiously asking the broadband technician, "Why is my internet getting slower? Is it the router again?" Li Auntie even requests the technician to notify her beforehand if the router needs to be restarted, demonstrating her unwavering focus on internet speed...

American Astronauts Stranded in Space for Two Months, Boeing Stumbles, Does C919 Seize the Opportunity?American astronauts have been "stranded" in the International Space Station (ISS) for over two months. The Boeing Starliner spacecraft, initially planned to return to Earth within a week, has been plagued by repeated malfunctions, delaying its return...

Why does my phone say "The person you are trying to reach is currently on another call"?Many people have encountered this strange problem: when calling someone, or when someone calls you, the phone shows a message saying "The person you are trying to reach is currently on another call". What's going on? Why can't you get through, and why does it say "on another call"?There are many reasons why you might get a "The person you are trying to reach is currently on another call" message when trying to make or receive a call, including but not limited to: The other person is actually on a call: This is the most common reason...

Does Amap Use Beidou Satellites? The Truth Revealed!While "Amap" and "Beidou satellite" seem closely related, this is not actually the case. Amap is an internet-based map service application, while Beidou satellite is the national satellite navigation infrastructure, which is one of the data sources for internet map services...