计算1314520的公式

简介：Luzhou was called Shangdang in ancient times. It is said that it lives high on the mountain and is in harmony with the sky. This is Shangdang. Because of its dangerous terrain, it has been a battleground for military strategists since ancient times. During the Warring States Period, the famous Battle of Changping broke out between Qin and Zhao in order to compete for this place. Zhao Kuo died here. During the Tang and Song Dynasties, fierce battles broke out here.