This should be very clear, leaving no room for dissensions.
Fifth: If the Japanese who are to be taken on the expedition do not wish to join the Castilians, and prefer to go in with the Portuguese, since they already know them, and likewise because they get along better, and the Portuguese treat them more as equals than is permitted here [they may do so].

But if they wish to go with the Castilians, let them come to Cagayan, and this will be arranged with them and with the fathers of the Society of Jesus, who are to act as guides.

[45] Sixth: His Majesty should procure and bring about that the general of the Society of Jesus should command and ordain to the fathers in Japon, not to hinder the bringing of this reenforcement of Japanese, and whatever may be needed therefor; and to this end he should send a father sufficiently commissioned, who should be an Italian.
Seventh: At the proper time and juncture, which will be before the news of the expedition has come to the knowledge of the Chinese, the fathers of the Society who are within the borders of China, in the city of Joaquin, should be withdrawn, that they may give information to the armies about what they know of the country, its strength, and its military forces and supplies; and whatever other dangers or reasons for caution they have in mind.

They will also serve as interpreters, and persuade the Chinese to allow the Spaniards to enter in peace, and to hear and receive the preachers, and accept the religion sent them by God.

They will tell the Chinese of the protection which his Majesty desires to offer them, so that they may receive the Spaniards without fear; and how great a favor he is doing them in freeing them from the tyrannies of their mandarins, and relieving them from the yoke of slavery that they at present bear, leaving them in freedom of body and soul, and exacting nothing but an acknowledgment for this gracious act.