Introduction to the stone sword box: There is a stone sword box on both sides of the pavilion near the lake. According to legend, because the blades of the Shuangjian Peak in the north of Lushan Mountain are facing Jiujiang City, people chiseled the stone box to store it. What people see now was carved by Chen Nai, the prefect of Jiujiang at that time, in the twelfth year of Tongzhi in the Qing Dynasty (1873).