[Although China has caused and will cause trouble in the future, still the salutary punishments that the Chinese have received, and the rapid increase in the Filipino population, justify the admission into the islands of 15,000 or 20,000 more Chinese, on the basis that there are only 8,000 or 10,000 now in the islands. These can be scattered through the islands and would work only on the estates of Spaniards.] Twenty thousand Chinese could work 10,000 quiñons of land, which planted with sugar cane would yield annually 2,000,000 picos of sugar. This sugar sold at Manila at only 3 pesos fuertes [per quintal] would produce the sum of 6,000,000 pesos fuertes. [In case of a popular insurrection the Chinese would all side with the government and if an attack were threatened from China, it would be sufficient to turn them over to the Filipinos, who, because of their hatred for them, on account of their superior industry, would soon make short work of them.] [Foreigners are useful because of their knowledge and capital, and create much wealth for the islands through their continued traffic with their own countries. But their presence does not promote the conservation of the colony.] Formerly the feeling against this class of persons was very pronounced, owing in great measure to the religious, who always spoke of the English, Dutch, etc., as heretics, drunkards, and barbarians. The antipathy thus engendered was highly important, in case of an outside attack. [The natives are now friendly to foreigners, who pay more liberally than Spaniards, and even Spaniards at Manila are aping the English and are friendly to them. Undesirable books have and will surely be introduced through the foreigners; and consequently, the laws forbidding them to go to the provinces must be enforced, and entrance to Manila must not be easy. La Place, the Frenchman, although he wrote many inaccurate things of the islands, [22] recognized the danger from foreigners, when speaking of the slaughter of the foreigners in 1819 during the cholera.]