《旧唐书·本纪·卷二十》
十二月初一，宰相杜让能兼任司空。
十二月戊午，宰臣杜让能兼司空。
On the first of December, Prime Minister Du Rangneng assumed the concurrent post of Minister of Works.
<s>[INST] Kindly elucidate the central themes in this passage in English: 十二月戊午，宰臣杜让能兼司空。 [/INST] On the first of December, Prime Minister Du Rangneng assumed the concurrent post of Minister of Works.</s>
Kindly elucidate the central themes in this passage in English: 十二月戊午，宰臣杜让能兼司空。
user
On the first of December, Prime Minister Du Rangneng assumed the concurrent post of Minister of Works.
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