Who ruled
- Tang Emperor Yizong of Tang 859–873
And beyond the steppe
- China Tang Yizong 859–873
- Iran Abbasid al-Mu'tazz 866–869
- Korea Silla Later Silla 780–930
- Byzantium Amorian Michael III 842–867 · Macedonian Basil I 867–886
Eastern steppe
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Environment · Central Mongolia turns drier, by the lake record, and stays so to 1300; the droughts of the Medieval Climate Anomaly (700–1300)
China
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A Kirghiz ruler receives imperial appointment from the Tang court under the emperor Yizong
Kirghiz embassies of the Xiantong era (860–873) · Yenisei Kirghiz Khaganate
The Xin Tang Shu counts three Kirghiz embassies in the Xiantong period
