《汉书·传·匡张孔马传》
第二年，升任太师，王莽担任太傅。
明年，徙为太师，而莽为太傅。
In the second year, he was promoted to Taishi, and Wang Mang was appointed Taifu.
<s>[INST] Kindly elucidate the central themes in this passage in English: 明年，徙为太师，而莽为太傅。 [/INST] In the second year, he was promoted to Taishi, and Wang Mang was appointed Taifu.</s>
Kindly elucidate the central themes in this passage in English: 明年，徙为太师，而莽为太傅。
user
In the second year, he was promoted to Taishi, and Wang Mang was appointed Taifu.
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