Chalin

Chalin belongs to the Chalin River country near Tonghe, where forested slopes of the Lesser Khingan give way to the fertile north bank of the Songhua. The main stream runs about ninety kilometres and drains nearly 1,900 square kilometres of springs, marshes and side valleys. Its junction with the Songhua made the lower river a natural meeting point for fishing, farming and travel through the Northeast China Plain.

During the Jin period this district fell within the sphere of Shangjing, the Jin capital region centered near Acheng. Yuan and Ming administrators depended on the same river corridors to connect the Songhua with the interior, while Jurchen communities continued fishing, hunting and cultivating the valley. The Qing state placed the region under the Hulan command and extended post roads across the north bank after the mid-eighteenth century.

By the Qianlong reign a small settlement known as Xiaojie stood near the lower Chalin and was later named for the river. Seasonal floods enriched the fields but repeatedly shifted channels, leaving oxbow lakes and marshy ground. Grain, timber, fish and river transport tied the scattered hamlets to Tonghe and the Songhua towns rather than to a single dominant city.