Seven years ago, Beidi's army of three hundred thousand warriors invaded Zhengyang Pass and was repelled by the Meng family's army. In that battle, the former general, Lord Meng Bachuan, was killed, Meng Yuan was seriously injured, and He Yuan Shan, the general of Beidi, was also shot and killed.
It was a general knowledge that the two sides have lost most of their troops and their generals. Therefore, after the war, the two warring nations signed a ten-year peace treaty, stipulating that the two countries would not go to war with each other for ten years, and they would recuperate.
Now, there were still three years before the end of the ten-year contract, but Beidi unilaterally tore up the contract, and an army of hundred thousand attacked Jinyang Pass. The Dasheng defenders were caught off guard, and Licheng was overran by the Beidi army overnight.
