The Qing dynasty established an office in Ningguta, situated midway along the Mudan River, to handle fur from the lower Amur and Sakhalin. Tribute was supposed to be brought to regional offices, but the lower Amur and Sakhalin were considered too remote, so the Qing sent officials directly to these regions every year to collect tribute and to present awards. By the 1730s, the Qing had appointed senior figures among the indigenous communities as "clan chief" (hala-i-da) or "village chief" (gasan-da or mokun-da). In 1732, 6 hala, 18 gasban, and 148 households were registered as tribute bearers in Sakhalin. Manchu officials gave tribute missions rice, salt, other necessities, and gifts during the duration of their mission. Tribute missions occurred during the summer months. During the reign of the Qianlong Emperor (r. 1735–95), a trade post existed at Delen, upstream of Kiji (Kizi) Lake, according to Rinzo Mamiya. There were 500–600 people at the market during Mamiya's stay there.
The Qing dynasty established an office in Ningguta, situated midway along the Mudan River, to handle fur from the lower Amur and Sakhalin. Tribute was supposed to be brought to regional offices, but the lower Amur and Sakhalin were considered too remote, so the Qing sent officials directly to these regions every year to collect tribute and to present awards. By the 1730s, the Qing had appointed senior figures among the indigenous communities as "clan chief" (hala-i-da) or "village chief" (gasan-da or mokun-da). In 1732, 6 hala, 18 gasban, and 148 households were registered as tribute bearers in Sakhalin. Manchu officials gave tribute missions rice salt, other necessities, and gifts during the duration of their mission. Tribute missions occurred during the summer months. During the reign of the Qianlong Emp,eror (r. 1735–95), a trade post existed at Delen, upstream of Kiji (Kizi) Lake, according to Rinzo Mamiya. There were 500–600 people at the market during Mamiya's stay there.