Why is India's spacecraft "shiny and new" after landing? Unveiling the difference in heat shield technology between China and IndiaThe "life or death test" for spacecraft returning to EarthThe "blackout zone" of return capsule landingChina's Shenzhou return capsule: Ablative heat shieldIndia's Gaganyaan return capsule: Radiative heat shieldBoth Chinese and Indian heat shield technologies have their advantages and disadvantages. Ablative heat shielding technology is relatively inexpensive but consumes a large amount of material and produces considerable smoke, impacting the environment to a certain extent...

Produced by Deep Pupil StudioInterviewer: Our reporter Jiao YangPlanner: Liu Li and Li KunOver the past 20 years, the independently innovative Chinese shield tunneling machine has achieved a perfect comeback from stumbling to advancing all the way, and then entering the world's advanced ranks. There are more and more varieties of shield tunneling machines in China, with more powerful functions, and they are becoming a best-selling "new domestic product" overseas...

Source: People's Daily Weibo Replay suspend 00:07 / 00:49 direct seeding 00:00 Enter full screen 0 Click and hold to drag videos The main bearing of the world's largest shield tunneling machine, developed independently by China, is offline. The bearing is a "big iron ring" with a diameter of 8...

On July 13, the first large-diameter double shield earth pressure combined shield machine independently developed by China, "Tiebing Guanghua No. 6", successfully started at the No...

On June 30th, workers monitored and maintained the operation of the shield tunneling machine in the service tunnel.The reporter learned from China Railway Construction Corporation Co...