After fighting for a month, Chu Feifeng's army suffered heavy casualties. They had no choice but to retreat and postpone their assault on Dingzhou. The war made him unable to continue the war for the time being.
Moreover, having many troops meant he had to feed them, and his rations ran low. Soon after, Chu Feifeng heard a vital piece of news—there were survivors of the Wei family army.
He was terrified and feared the Wei family's God of War was still alive. Therefore, he wanted to gather more information before mobilizing his troops again.
Luo Jin'an and the others saved Dingzhou. After the war, it was time to rest. However, they used half of their stored grain and would not have enough food if they continued fighting.
Not only was the border remote, grain production was low. Su Binglan's calculations showed they might not have enough grain to survive.