This meant that no succeeding Ming emperor was allowed to have the equivalent of a prime minister but instead had to deal directly with the tens of ministries and agencies that did the actual work of government. This system was barely workable for an extremely energetic and detail-oriented emperor like Taizu, and a disaster for subsequent rulers of lesser capabilities. In one ten-day period, Taizu had to respond to 1,660 different official documents dealing with 3,391 separate matters.23 One can imagine what his successors thought about the work load he imposed on them.