C1637 Remnant People of Jiangbei

Time was of the essence, Explosive and other tools were not enough. If he wanted to defend such a wide and long Dajiang, he had to use a clever method, efficiency was the most important indicator.

The old man had a lot of experience in life. Under albus pallidus's reminder, crowd, who was busy working on the ice at the Shizheng's Ferry, started to change his way of working.

However