Mei Changsu slightly implies that Xia Jiang’s troups wouldn’t be aware of exactly what they’d done in quashing the Chiyan army, and so wouldn’t be complicit in the act. Can that really be true?

And what was the sequence of events, again? There was a fake letter from Xia Dong’s husband that accused the Chiyan army of treason (on what grounds, or with what evidence? Why was it broadly believed?). Then Xia Jiang’s people led a retaliatory siege on the Chiyan army, which succeeded because it was an ambush and the Chiyan army was on unfavourable territory. Is that the sum of it?