尚书博士。
秋九月，楚王刘郢客薨故，太宗皇帝命令有司盖棺定论，最终，刘郢客被谥为楚懿王，是因为刘郢客忠心不二，支持推恩策，将楚国的国土封给两个弟弟的缘故。
正武六年冬十二月，匈奴入侵云中，云中守魏尚率领云中军民誓死抵抗，最终使云中安稳如初。
夏五月，匈奴单于派来使者，与太宗皇帝修订和亲，太宗皇帝雷霆大怒，当着满朝文武的面呵斥匈奴使者。
太宗皇帝说：从正武二年开始，匈奴每年冬天都进攻汉家的北方，又每年春天来和亲求和，我本着礼教的缘故，每每答应匈奴单于的建议，但匈奴屡屡再犯，实在是获罪于天，无可祷也。
于是，太宗皇帝让匈奴使者回去告诉单于：如果想要和平，需要答应以下几个条件。
一，每年秋八月，送马十万，牛十万，橐驼二十万，羊五十万至马邑，随行牧民不得携带刀刃。
二，
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