China had the suzerainty over Ryukyu since Ming Dynasty.
自明朝以后,中国对琉球一直拥有宗主权.
In the negotiation about Ryukyu problem, Li Hongzhang's delay policy further impaired Qing's suzerainty.
在琉球问题交涉中, 李鸿章的 “ 延宕之法”进一步弱化了宗主权.
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