《宋史·本纪·卷六》
二十三日，任命左卫上将军张永德为太子太师。
己卯，以左卫上将军张永德为太子太师。
On October 23, Zhang Yongde, Senior General of the Left Guard, was appointed Imperial Teacher to the Crown Prince.
<s>[INST] Explain the meaning of this Classical Chinese passage in English: 己卯，以左卫上将军张永德为太子太师。 [/INST] On October 23, Zhang Yongde, Senior General of the Left Guard, was appointed Imperial Teacher to the Crown Prince.</s>
Explain the meaning of this Classical Chinese passage in English: 己卯，以左卫上将军张永德为太子太师。
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On October 23, Zhang Yongde, Senior General of the Left Guard, was appointed Imperial Teacher to the Crown Prince.
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