C642 Retreat to yangzhou

I frowned and said, "Could it be that Shu Army came by boat? Our defense along the river actually did not notice that the Shu Army had already closed in on us? " Chen Zhi said: "Fourth brother, have you forgotten? Because of the tight war here, you reduced the defense line of the sea, so there aren't many people on the defense line, and that's why Shu Army took advantage of this loophole!"

I