Jurchen tribal consolidation and formation of alliance mechanisms

Timeline

1. 1072–1076Basins of the Achu River and Huntong River · Northeast ChinaThe Wanyan clan and allied tribes launched campaigns against neighboring weaker tribes or forced their submission, expanding fishing and hunting territories and manpower, shifting tribes from loose parallelism to a hierarchical structure with the Wanyan clan as alliance leader.
2. 1077–1080Jurchen stockades and Liao's Northeast Circuit · Northeast ChinaThe consolidated Jurchen alliance dealt with Liao in tribute, mutual trade, and border defense, maintaining nominal subordination while gradually expanding room for independent military action, rehearsing the organizational form for later wars against Liao.