Jianmen is closed in Jiange County, and Jiange County has the Jialing River flowing through. I have been to the depths of the Qinling Mountains. I know that the Jialing River is from Qinling Mountains. The ancient Taurus Road in ancient times was the main road connecting the land and Guanzhong. This is a strategic place! In the cold weapon era, Zhuge Liang built this sword gate building has never been breached! It is really a husband to Guan Wanfu!