Baoshan County and Mingshui County were neighbors, though one belonged to Xingzhou Prefecture and the other to Hanzhong Prefecture.
Although the two counties were neighboring counties, transportation was not convenient. This was because there were continuous mountains and rivers between the two counties. In the past, there was a narrow path for people to travel between the two counties, but that was only a narrow path. The mountains and rocks on both sides were so tall that even a small cart could not pass through. Therefore, all along, everyone had to pass through Xingcheng Pass in Xingzhou Prefecture to enter Hanzhong Prefecture, before finally arriving at Baoshan County.
After the Jin soldiers occupied Hanzhong Prefecture, the Great Zhou soldiers blew up the rocks on the mountain and blocked the path.
However, Zhuang Dawei pointed them to another path.
