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In page Du Mu:

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In 848 Du Mu returned to Chang'an after being appointed Vice Director of Merit Titles and was awarded his old post in the History Office. He was transferred to the post of the Vice Director of the Ministry of Personnel in 849, then was appointed governor of Huzhou in 850 at his own request. He was recalled to Chang'an in 851 to the post of Director of the Bureau of Evaluation and Drafter, and was appointed to the office of Secretariat and Drafter in 852. He fell ill that winter and died before the next lunar year.