Three Kingdoms Chinese TF towers

[Barritus]

How are these towers costed? It appears to be 2AP for a base width of TF, +1AP for being the external wall of a tower, all times 4 for the 4 base width of perimeter, making a total of 12AP.

Why isn't a gate included? The rules say that all such structures need at least one gate, for another 2AP.

[Swampster]

I think this is a mistake.

The +1 AP is for a PF tower and the +2 in combat says while defending PF and in a tower. TF don't count as towers for cost or benefit.

The Norman tower is 4 x 2 plus 2 for the gate.