Yu Xiaolian wanted to continue working on the nails and was thinking of a way to send Su Jinghua and Sun Manyue away, when she saw Fang Cao hurrying over to relay a message.
"Madam, the master said that a barricade wall should be set up several tens of steps outside the city gate, and a watchtower should be erected, needing a height of two zhang.
The wall will be on top of the watchtower, with a height of one zhang and three chi, a base thickness of eight chi, tapering three chi at the top, and extending three or two zhang over both ends to block conflicts."
Fang Cao was considered to be the most educated among the maids of the Su Family, so she could clearly remember what Su Jingchen had said.
"The master also said that this way, the opening and closing of the gate wouldn't be known from outside, even if they break into the wall, stone cannons from the city will rain down, and the sheep and horse walls on both sides can attack the enemy from both sides."
