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...

Rescuing the Doomed: How Chinese Scientists Brought Back "Dead" SatellitesIn March 2024, China successfully launched two satellites named DRO-A and DRO-B from the Xichang Satellite Launch Center, marking another significant advancement in Chinese space technology. However, an unexpected incident occurred during the launch: the upper stage of the rocket malfunctioned, causing the satellites to deviate from their intended orbits...

The Light of Domestic Production? A Deep Dive into HarmonyOSIn recent years, the emergence of the domestic mobile phone operating system "HarmonyOS" has sparked widespread attention and discussion. Some people are full of expectations for it, believing it to be the hope for domestic mobile phone systems, while others remain skeptical, considering it to be just another gimmick...

July 17, 2014: The Downfall of MH17 and the International Pursuit of TruthOn a peaceful afternoon of July 17, 2014, MH17 took off from Amsterdam, bound for Kuala Lumpur. This Boeing 777, operated by Malaysia Airlines, carried 298 passengers and crew members from diverse backgrounds and nations...

Why Do Planes Avoid Flying Over Tibet?Tibet boasts eight civilian airports, but why do most planes choose to take longer, fuel-consuming routes instead of flying directly over the region? Do airplanes experience "altitude sickness" too?The Tibetan Plateau, a vast expanse averaging over 4,000 meters in elevation, appears as a "vacuum zone" on airline route maps. One might wonder if it's simply the high altitude that prevents planes from flying over it...

Apple Tax War Escalates: ByteDance and Tencent Team Up to Challenge Apple's DominanceRecently, the conflict between Apple and WeChat and Douyin has intensified. The core of this dispute is the controversial "Apple tax...

Why Do We Always Board Planes from the Left? Historical and Safety ConsiderationsHave you ever noticed that, regardless of the aircraft you board, we always enter through the left side door? This isn't a coincidence; it's rooted in a rich history and thoughtful safety considerations.A Habit Stemming from the Age of SailingThe tradition of boarding planes from the left can be traced back to ancient seafaring...

Dong Mingzhu and Wang Zirui's "GREE Tiger": Truth and SpeculationTwenty days ago, GREE held a new product launch conference in Shijiazhuang. After the conference, Dong Mingzhu, surrounded by her executives, took a night tour of the Rongguo Mansion, the filming location for "Dream of the Red Chamber...

Rise of Chinese TV Brands: From Traditional to Smart, Who Will Dominate the Future?With advancements in technology and the surge of the digital wave, the television industry has undergone a drastic transformation from black and white television to today's digital television. In recent years, the television industry has faced challenges and pressure, with some large companies making significant progress in television display technology and intelligence levels, accelerating the pace of updates and iterations...

Helicopter "Air Taxi" Service Launches: Kunshan to Pudong in Just 30 Minutes, Ushering in a New Era of Low-Altitude Transportation in the Yangtze River DeltaOn the morning of August 18th, a helicopter carrying two passengers took off from the Kunshan City Aviation Terminal in Jiangsu province, embarking on a point-to-point low-altitude passenger transportation journey involving "air-ground-air" travel. After a nearly 30-minute flight, the helicopter landed at the Shanghai Pudong Xingye Flight Base at 8:58 AM...

"Shutting down e-commerce": A Cure for Unemployment or a Band-Aid Solution? In recent times, a controversial suggestion has emerged online "shut down e-commerce". This seemingly simple and forceful solution is seen by some as a "magic bullet" to address the current severe unemployment situation...

Why Do Female Astronauts Take Birth Control? Unveiling the Secret Challenges of SpaceIn 1961, Soviet cosmonaut Yuri Gagarin became the first human in space, ushering in a new era. Today, countless astronauts have ventured into space, but what remains largely unknown is that the number of female astronauts is remarkably small, and almost all of them are required to take birth control pills before missions...