单包和双包区别简介：But Yan Yingyuan did not say that there were few cannons in Yutian, and they were all old cannons with short range and low power. The enemy was still five hundred steps away, and it was far from time to fire.
But Yan Yingyuan did not say that there were few cannons in Yutian, and they were all old cannons with short range and low power. The enemy was still five hundred steps away, and it was far from time to fire.
