The following year Alfonso da Alburquerque and Tristan da Conha sailed with thirteen ships and thirteen hundred men. On their passage the latter, parting company off the Cape of Good Hope, ran far away to the south, where he discovered the islands which still bear his name-- Tristan da Conha. He afterwards, with part of his fleet, cruised along the Arabian shores, while Alburquerque was employed in trading, building forts, and establishing factories on the coasts already discovered. Other commanders followed, and Fernando Perez da Andrade, sailing east, passed through the Straits of Malacca, until he reached Canton, then the most celebrated sea-port on the southern coast of China. Thence he sent an ambassador to the Emperor of China, to settle trade and commerce. At first things went well; but when the next Portuguese squadron arrived, the people on board behaved so outrageously to the Chinese that their envoy was murdered, and they were driven out of the country. Some years afterwards the Portuguese obtained leave to settle in a little island opposite to Canton. It was called Macao, and they have ever since held it, though subject to the Emperor of China. In 1520 Jago Lopez da Sequeiro sailed for the Red Sea, with a fleet of twenty-four ships. Coming to the island of Mazua, he found it forsaken by the inhabitants, who had fled over to Arquico, a port belonging to the Emperor of Ethiopia, the far-famed Prester John, whose country was now first discovered by sea. At this time it was a vast monarchy, and extended along the shores of the Red Sea above one hundred and twenty leagues. In following years the Portuguese made some progress into the country, five hundred of them being sent under the command of Don Christofero da Gama, to assist the Emperor against his rebellious subjects and his enemies the Turks. The Moluccas, five in number, named Tirnate, Tidore, Mousel, Machien, and Bacham, were discovered by Antonio da Abreu.