During the 1662 Siege of Fort Zeelandia in which Chinese Ming loyalist forces commanded by Koxinga besieged and defeated the Dutch East India Company and conquered Taiwan, the Chinese took Dutch women and child prisoners. The Dutch missionary Antonius Hambroek, two of his daughters, and his wife were among the Dutch prisoners of war with Koxinga. Koxinga sent Hambroek to Fort Zeelandia demanding Hambroek persuade them to surrender or else he would be killed when he returned. Hambroek returned to the Fort where two of his other daughters were. He urged the Fort not to surrender, and returned to Koxinga's camp. He was then executed by decapitation. In addition to this, a rumor was spreading among the Chinese that the Dutch were encouraging native Taiwan aboriginals to kill the Chinese, so Koxinga ordered the mass execution of Dutch male prisoners in retaliation, in addition to a few women and children also being killed. The surviving Dutch women and children were then turned into slaves. Koxinga took Hambroek's teenage daughter as a concubine, and Dutch women were sold to Chinese soldiers to become their wives. The daily journal of the Dutch fort recorded that "the best were preserved for the use of the commanders, and then sold to the common soldiers. Happy was she that fell to the lot of an unmarried man, being thereby freed from vexations by the Chinese women, who are very jealous of their husbands." In 1684 some of these Dutch wives were still captives of the Chinese.