In 1564, Portugal commanded the trade of India, Japan, and China, though their pride was deeply shocked at the supreme indifference with which the Chinese treated them. Their atrocities at Ningpo and Macao, and their subsequent servility, had opened the eyes of the Celestials to their true character, and unfortunately for other European adventurers, they had come to the conclusion that all western nations were alike. The senate of Macao complained to the viceroy of Goa, of the contempt with which the Chinese authorities treated them, confessing however that, “it was owing more to the Portuguese themselves than to the Chinese.” The Chinese were obliged to restrict the commerce of Portugal to the port of Macao, in 1631.〔(Princeton University)〕

The Chinese and Foreigners. The position and treaty rights of foreigners in China have hitherto been maintained by military force; and though Mr. Burlingame's mission appears to be especially directed to the abolishment of the " force policy," yet without force, that is, a show of military force for protection, the position of foreigners of every class would not be tenable in China a month. Foreigners have at different periods settled in China; but after remaining for a time, they have been massacred. For instance, Mohammedans and others settled at Canton in the ninth century; and in 889, it is said that 120,000 foreign settlers were massacred. Again in the sixteenth century, the Portuguese commenced trade and formed a settlement at Ningpo; Spaniards and other foreigners also settled here. But in 1542, the whole settlement, consisting of over 3,000 persons, was destroyed, most of the settlers being put to death. Also at Cha-pu, about seventy or eighty miles north of Ningpo, on the Hangchow bay, there was a settlement of foreigners for the purposes of trade, about two hundred years since, who at length were massacred. It is often reported among the people at Ningpo, and other places in China where there are foreigners residing, that they and all the natives connected with them are to be put to death. So rife was such a report at Ningpo, two years since, and the excitement began to be so great that the foreign consuls requested the native officials to issue proclamations to quiet the people, and threaten punishment to those circulating inflammatory reports.〔Original from the University of Wisconsin - Madison〕 (eastern china mission - Letter from Mr. Kwolton)