The first phase from 1209 to 1215 was quite successful for the northern forces, but this was followed by a series of local rebellions from 1215 to 1225 that undid many of these earlier gains.
1209年至1215年间的第一阶段对北军来说是非常成功的，但随后是1215年-1225年的一系列叛乱，这些更早期的得益多被损毁。