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... d only heard the name before, not even seeing a picture, so when he discovered it in "Mechanical Technique," he naturally wanted to bring this invention to life.
Every day, he worked on it little by little, and it took a lot of time to finally make the ballista.
Known as the "bed," the ballista is certainly not small in size; if it were to be operated by ordinary people, it would require one or two people to push it along.
Of course, for Wang Sheng, this wasn’t a problem, ...
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