Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Ainu people:

"

The Chinese Ming dynasty (1368–1644) placed Sakhalin under its "system for subjugated peoples" (ximin tizhi).[citation needed] From 1409 to 1411 the Ming established an outpost called the Nurgan Regional Military Commission near the ruins of Tyr on the Siberian mainland, which continued operating until the mid-1430s. There is some evidence that the Ming eunuch Admiral Yishiha reached Sakhalin in 1413 during one of his expeditions to the lower Amur, and granted Ming titles to a local chieftain.[9]