These three-wheelers are very common in northeastern China.
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Colloquial northern Chinese term, more neutral name is 三轮摩托车. Went viral in 2024 after American tourists bought 三蹦子 in China and shipped them home, making the term briefly international.
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蹦 means 'to bounce' — the three-wheeler is named for the bouncy ride and its bang-bang-bang engine sound.