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In page History of Macau:

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They later built some rudimentary stone-houses around the area now called Nam Van. But not until 1557 did the Portuguese establish a permanent settlement in Macau, at an annual rent of 500 taels (~20 kilograms (44 lb)) of silver.[3] Later that year, the Portuguese established a walled village there. Ground rent payments began in 1573. China retained sovereignty and Chinese residents were subject to Chinese law, but the territory was under Portuguese administration. In 1582 a land lease was signed, and annual rent was paid to Xiangshan County.[citation needed] The Portuguese continued to pay an annual tribute up to 1863 in order to stay in Macau.[4]