Nurgan Regional Military Commission
The Nurgan Regional Military Commission (Chinese: 奴兒干都指揮使司; pinyin: Nú'érgān Dūzhǐhuīshǐ Sī) was a Chinese administrative seat established in Manchuria (including modern-day Northeast China and Outer Manchuria) during the Ming dynasty. It was located on the banks of the Amur River, about 100 km from the Sea of Japan, at Nurgan City (modern-day Tyr, Russia).
Source: Wikipedia — Nurgan Regional Military Commission (CC BY-SA 4.0)