The gunpowder had been improved on for many years.
Now, it was much more powerful than before.
In fact, its destructive power had been multiplied many times.
Apart from the gunpowder, they also had kerosene on hand.
They kept refining the kerosene according to the method provided by the emperor. The most flammable kerosene was collected for military use.
After many years, they had a large storage of kerosene in storage.
"Sir, it seems the army of the State of Qi is building scaling ladders."
"I know! Just let them do it. We need to be cautious about the enemy's attack from inside,"
An Mu said.
Because of that, they had suffered many losses during the war against Clan Zhao.
Many soldiers and officers surrendered to Clan Zhao at crucial moments.
Some of them even switched sides on the battlefield.
