Pomegranate tree introduction: There is a pomegranate tree in front of Song Zhenzhong’s tomb, which was planted by Song Zhenzhong in Chongqing Prison. In 1984, Song Zhenzhong's sister Song Zhenping went to Chongqing's Zhazidong to cut out pomegranate tree branches and transplanted them to his brother's tomb. It has now grown to the size of a bowl.