예조
The Astronomical Bureaus worked closely with The Ministry of Rites. The bureau submitted monthly ordinances, planetary and celestial locations, and seasonal accounts within the calendar to the Ministry. The Ministry also helped train children of astronomers for their future jobs and helped select outsiders in certain cases, but not specifying from where they draw these candidates. The Bureaus were also in close contact with the Emperor, and he often read the reports sent by the Bureau to the Ministry.