Primary defensive line in dark blue, secondary as light blue.
This is bit different from South China, since here you have chances to do offensive actions. Those vulnerable garrisons are marked with red circle. Ichang does not requite major operation and you SHOULD attack it to open the road. Sinyang would require complete encirclement operation and expect to be contested in that, so I'd not recommed it yet.
Try to keep railroad between Chengchow & Sinyang cut, thus here you might want to fight in clear terrain here. Withdraw all units east of dark blue like there for that purpose. If not successful, withdraw to light blue line.







