Introduction to Jingmagang: Jingmagang, also called Dianjiangtai, was the starting point where Zhu Yuanzhang swore an oath to fight against the Yuan Dynasty. At that time, Zhu Yuanzhang was stationing troops in Qianmu Tian to rebel against the Yuan Dynasty. One day, he galloped at Jingma Hill. Because he was riding fast and the vegetation at Jingma Hill was lush, he did not realize that there was a cliff and a deep stream in front of him, which was very dangerous. Ming.