《新唐书·列传·卷八十一》
试太常卿，封为济阴郡公，加封咸宁郡王，兼朔方节度副使。
试太常卿，封济阴郡公，进封咸宁郡王，兼朔方节度副使。
He tried to be the minister of Taichang, and was enfeoffed as the Duke of Jiyin County, enfeoffed as the King of Xianning County, and concurrently appointed as the deputy commander of the Northland.
<s>[INST] Kindly elucidate the central themes in this passage in English: 试太常卿，封济阴郡公，进封咸宁郡王，兼朔方节度副使。 [/INST] He tried to be the minister of Taichang, and was enfeoffed as the Duke of Jiyin County, enfeoffed as the King of Xianning County, and concurrently appointed as the deputy commander of the Northland.</s>
Kindly elucidate the central themes in this passage in English: 试太常卿，封济阴郡公，进封咸宁郡王，兼朔方节度副使。
user
He tried to be the minister of Taichang, and was enfeoffed as the Duke of Jiyin County, enfeoffed as the King of Xianning County, and concurrently appointed as the deputy commander of the Northland.
assistant