<P> Young Chinese boys and girls were kidnapped by Simao to be sold as slaves . </P> <P> The king of Portugal, desirous of the trade of China, sent an ambassador and one of his captains to propose a commercial alliance . The ambassador was gladly received, and sent by land to Nankin, and the honourable behaviour of Pedro de Andrade gained the important traffic of the harbour of Canton . On this officer's return to India, Sequeyra the governor sent Simon de Andrade, brother to Pedro, with five ships to China; and whatever were his instructions, the absurdity of bis actions was only equalled by his gross insolence . As if he had arrived among beings of an inferior order, he assumed an authority like that which is claimed by man over the brute creation . He seized the island of Tamou, opposite to Canton . Here he erected a fort and a gallows; and while he plundered the merchants, the wives and daughters of the principal inhabitants were dragged from their friends to his garrison, and the gibbet punished resistance . Nor did he stop even here . The Portuguese in India wanted slaves, and Andrade thought he had found the proper nursery . He published his design to buy the youth of both sexes, and in this inhuman traffic ha was supplied by the most profligate of the natives . These proceedings, however, were soon known to tha emperor of China, and the Portuguese ambassador and his retinue died the death of spies . Andrade was attacked by the Chinese itao, or admiral, and escaped with much loss, by the favour of a tempest, after being forty days harassed by a fleet greatly superior to his own . Next year Alonzo de Melo, ignorant of these transactions, entered the harbour of Canton with four vessels . But his ships were instantly seized, and the crews massacred, as spies and robbers by the enraged Chinese . And though the Portuguese afterwards were permitted to some trade with China, it was upon very restricted and disgraceful conditions1 *, conditions which treated them as a nation of pirates, as men who were not to bs trusted unless fettered and watched . </P> <P> "The works of the English poets, from Chaucer to Cowper: including the series edited with prefaces, biographical and critical" by Samuel Johnson (1810) and "The Percy anecdotes: Original and select" by Sholto Percy, Reuben Percy (1826) </P> <P> "Even the very lascars and scullions of the Portuguese purchase and carry slaves away . Hence it happens that many of them die on the voyage, because they are heaped up upon each other, and if their masters fall sick (these masters are sometimes Kaffirs and negroes of the Portuguese), the slaves are not cared for; it even often happens that the Kaffirs cannot procure the necessary food for them . These scullions give a scandalous example by living in debauchery with the girls they have bought, and whom some of them introduce into their cabins on the passage to Macao . I here omit the excesses committed on the lands of the pagans, where the Portuguese spread themselves to recruit youths and girls, and where they live in such a fashion that the pagans themselves are stupefied at it ." </P>

Describe the interaction between the ming dynasty and the portuguese between 1513 and 1537