Yong-le: Year 9, Month 5, Day 9
31 May 1411
The regulations for the examination of Jiao-zhi native officials were fixed. All of the native officials, whether they had been transferred from other posts or whether they had inherited their posts, were to be examined once every three years. The offices were to detail, in an employment record, the events during the period of tenure of the officials and verify the record. Then, the officials were to report with this to the provincial administration commission and the provincial surveillance office for examination. The officials rated adequate would then resume their posts. Those who were considered capable in filling their posts were to be rewarded as appropriate from official funds and would then return to their posts. Those lacking in judgement were to be demoted one grade and sent as replacements to those offices which required officials. After six years, the examination was to be the same as after the third year. After nine years, the officials were to be sent with their employment records to the capital for examination and subsequent demotion or promotion. If the officials were corrupt, had harmed the people or engaged in plundering or killing, and there was clear evidence in the matter, the provincial surveillance commission was permitted to institute investigations and punish the offenders in accordance with the law.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 12, page 1470/71