Qingshui (783) — the same event in New Book of Tang and Zizhi Tongjian

New Book of Tang: Zhang Yi, Military Governor of Fengxiang, held a covenant at Qingshui with the Tibetan minister Shang Jiezan.; Zizhi Tongjian…

What each source says

New Book of Tang (Xin Tangshu), Annals · AD 783 · 清水

Zhang Yi, Military Governor of Fengxiang, held a covenant at Qingshui with the Tibetan minister Shang Jiezan.

鳳翔節度使張鎰及吐蕃尚結贊盟于清水
Location: 新唐書 卷007 德宗·順宗·憲宗 建中4年1月

Zizhi Tongjian (Comprehensive Mirror) · AD 783 · 清水

Zhang Yi and the Tibetan minister Shang Jiezan swear an alliance at Qingshui.

春，正月，丁亥，隴右節度使張鎰與吐蕃尚結贊盟於清水。
Location: 資治通鑑 卷228

Place: 清水

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