How did the ancients make fire? Rubbing a steel bar against a stone, an interesting phenomenon occur

The teasing has begun!

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What is the mercury heart? Slowly bring an iron nail close to mercury and an interesting scientific

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Relaxing video: Skilled workers at a satisfying job site~

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Those skilled workers deliver satisfying results on the job site!!

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Can cliff skiing cause an avalanche? #Science #Unwind #CliffSkiing #Avalanche #Trivia

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How are mooring ropes secured? #Science #Unzip #MooringRopes #Ship

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Take a look at those ancient high-tech artifacts!

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I lost the 80s cartoons

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"You have medicine" Modern people traveled to ancient times, but were treated cruelly...

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Xiao Ming traveled back to ancient times to save his ancestors and came back with AK

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Restoration of the water dui (dui) of "Heavenly Creation", automatic rice pounding machine with wate

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Reconstructing the ancient rice milling method in "The Exploitation of the Works of Nature"

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Speed Bump Workers Series! 6.29

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Why do two people need to swing the hammer when forging iron? #Science #Unzip #Ironmaking #Forging #

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Introduction to Tequila

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It took a month and a half to reproduce the dragon bone waterwheel in "The Exploitation of the Works

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The mesmerizing farm machinery that's like a speed bump for men

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Remembering Mother's Grace in the Golden Palace (5)

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Cheng Wanwan designs Mr. He, and Sun protects Cheng Wanwan

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Why does steel slag when forging iron? #Science #Unzip #Forging #ExtremeComfort

haoqiwanhuatong

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