A small mountain with an area of about 20 square kilometers (4,900 acres), Purple Mountain is a mountain related to many historical events of both ancient and modern China. It was originally known as Bell Mountain () and also became known as Mount Jiang () after Sun Quan named Jiang Ziwen, an Eastern Han official whose spirit was said to haunt the site, as the mountain's god during the Three Kingdoms era. The name Zijin () means copper - when copper is pure, it appears purple in color, so in Chinese, it is also called purple-gold. It is also named Mount Jinling (), due to its purple rocks. Jinling means the mount of purple-gold. It is the origin of the nickname Jinling () of Nanjing. During the Ming dynasty, it was also called Mount Shenlie ().