sentence: Although there were several dictatorial eunuchs throughout the Ming , such as Wang Zhen , Wang Zhi , and Liu Jin , excessive tyrannical eunuch power did not become evident until the 1590s when the Wanli Emperor increased their rights over the civil bureaucracy and granted them power to collect provincial taxes .
question: why was someone taxing someone _ _ ?
answers: the Wanli Emperor increased their rights over the civil bureaucracy and granted them power to collect provincial taxes