C887 Strategic Commanding

"You... who did you learn these from?"

Half an hour later, when he saw the precise design of the blueprint, Zhu Yeqing's eyes widened in shock.

At the same time, she finally knew how Zhang Bei Armor did it.

This kid had actually made an elaborate underground canal, from the top of the mountain to here, directly guiding the spring water to this side!

Actually, in this highly developed era