Sino-Portuguese Treaty of Peking| Treaty of Friendship and Commerce between Portugal and China |
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| Signed | 1 December 1887 |
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| Location | Beijing (Peking), China |
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| Effective | 28 April 1888 |
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| Condition | Exchange of ratifications |
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| Signatories |
- Tomás de Sousa Rosa
- Yikuang
- Sun Iu-uen
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| Parties |
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| Languages | Portuguese and Chinese |
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The Sino-Portuguese Treaty of Peking was an unequal treaty signed on 1 December 1887 between the Kingdom of Portugal and the Qing dynasty. Regarded by China as one of the unequal treaties concluded following the Second Opium War, it granted Portugal perpetual colonial rights over Macau in exchange for its cooperation in curbing the smuggling of opium.