Xuan-de: Year 1, Month 11, Day 6
4 Dec 1426
Zhang Yun and Ma Jun, both supervising secretaries in the Auxiliary Office of Scrutiny for Rites, were banished to Jiao-zhi as clerks....The Emperor said: "...The supervising secretaries did not advise of the receiving of bribes. Send them to Jiao-zhi as clerks for the rest of their lives."
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 17, page 0594/95