Tang emperor from 805 to 820 who brought rebel regional governors back under the court, a revival called the 元和中兴. He banished 韩愈 for opposing a Buddha relic procession and is said to have been killed by eunuchs.
Han Yu was banished to Chaozhou by Emperor Xianzong of Tang for remonstrating against welcoming the Buddha's relic.
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The rebel regional commands he brought to heel are called 藩镇. In his last years he took immortality pills, 金丹, grew irritable and had his attendants beaten; the eunuch 陈弘志 was said to have poisoned him.