《明史·志·卷五十一》
吴元年，设置各道按察司，设按察使，正三品，副使，正四品，愈事，正五品。
吴元年，置各道按察司，设按察使，正三品，副使，正四品，佥事，正五品。
In the first year of the reign of Emperor Wu, provincial inspectorate departments were set up, with the inspector general being second rank and deputy inspector general being third rank, and assistant inspectors being fourth rank.