Treaty of Kyakhta (1727)

The Treaty of Kyakhta (or Kiakhta) (Russian: Кяхтинский договор, Kjachtinskij dogovor; Chinese: 布連斯奇條約/恰克圖條約; pinyin: Bùliánsīqí/Qiàkètú tiáoyuē, Wade-Giles: Pu⁴lien²ssŭ¹ch‘i²/Ch‘ia⁴k‘o⁴tu² t‘iao²yüeh¹, Xiao'erjing: بُلِيًاصِٿِ/ٿِاكْتُ تِيَوْيُؤ; Mongolian: Хиагтын гэрээ, Hiagtïn geré; Manchu: ᠵᡠᠸᠠᠨ
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ᠪᡳᡨᡥᡝ Wylie: Chuwan emu hatsin i pitghe, Möllendorff: Juwan emu hacin i bithe), along with the Treaty of Nerchinsk (1689), regulated the relations between Imperial Russia and the Qing Empire of China until the mid-19th century. It was signed by Tulišen and Count Sava Lukich Raguzinskii-Vladislavich at the border city of Kyakhta on 23 August 1727.

Qing subjects are referred to as those from "Dulimbai gurun" in Manchu in the Treaty.

By the 1640s Russian adventurers had taken control of the forested area north of Mongolia and Manchuria. From 1644 the Manchus made themselves masters of China (Qing dynasty). In 1689 the Treaty of Nerchinsk established the northern border of Manchuria north of the present line. The Russians retained Trans-Baikalia between Lake Baikal and the Argun River north of Mongolia.

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