The violence prompted an official protest in Tokyo by Japan 's vice foreign minister , Shotaro Yachi , who asked the Chinese minister to Japan , Cheng Yonghua , to strengthen security , Reuters reported , citing the Kyodo news agency .
Tokyo
Japan
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Tokyo
Japan
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Japan
Tokyo
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Japan
Tokyo
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Japan
Tokyo
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Japan
Tokyo
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Japan
Tokyo
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Japan
Tokyo
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LOCATION
Tokyo
LOCATION
Japan
LOCATION
Japan