So if you use your brain when doing things, you can save some effort.

Learn from this—every little detail is a master move!

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[Uncle Qiu Takes a Look] The video has been packaged—welcome to check it out!

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What arrow tips can pierce a heavy riot shield with a 70lb compound bow?

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[Miao Xiaoge's cartoon works] Cartoon car video cartoon engineering vehicle video children's educati

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The follow-up on well drilling at the mountaintop is here

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Those Awesome Mechanical Series of Speed Bumps ~1.1

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The irresistible mechanical series of speed bumps~

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The Wisdom of the Ancients

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What if screws are rusted and can't be removed? Here's the solution—let's learn it together!

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The wisdom of the working people—promise me you'll learn it!

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Creative Lighters

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The skilled workers' satisfying work site~

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Super cool mechanical series of speed bumps!

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Here Come the Tips for Using and Storing Hardware!

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Speed Bump Mechanical Series! 7.30

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Super cool mechanical series of speed bumps! 7.18

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Technology changes life.

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Come and see the all-capable working people!

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Mechanical Arm Peas

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A mechanical spider that enters the brain through the eyeball—human tech in the future world is beyo

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