In Japan, it is tradition for husbands to get a monthly allowance from their wives.
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The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
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The first foreigner to become a samurai was an African slave.
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Japanese engineers were asked to redesign the front end of the Bullet Train because it carried enough speed to create a sonic boom whenever it exited a tunnel. Residents could feel the blast from miles away.
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