People visit imperial Xiaoling Mausoleum in Nanjing, east China (1/6)

Aerial photo taken on Nov. 5, 2019 shows the scenery of the imperial Xiaoling Mausoleum, the burial site of the Ming Dynasty's (1368-1644) founding emperor Zhu Yuanzhang, in Nanjing, capital of east China's Jiangsu Province. (Xinhua/Li Bo)

People visit the imperial Xiaoling Mausoleum, the burial site of the Ming Dynasty's (1368-1644) founding emperor Zhu Yuanzhang, in Nanjing, capital of east China's Jiangsu Province on Nov. 5, 2019. (Xinhua/Li Bo)

Aerial photo taken on Nov. 5, 2019 shows the scenery of the imperial Xiaoling Mausoleum, the burial site of the Ming Dynasty's (1368-1644) founding emperor Zhu Yuanzhang, in Nanjing, capital of east China's Jiangsu Province. (Xinhua/Li Bo)

People visit the imperial Xiaoling Mausoleum, the burial site of the Ming Dynasty's (1368-1644) founding emperor Zhu Yuanzhang, in Nanjing, capital of east China's Jiangsu Province on Nov. 5, 2019. (Xinhua/Li Bo)

People visit the imperial Xiaoling Mausoleum, the burial site of the Ming Dynasty's (1368-1644) founding emperor Zhu Yuanzhang, in Nanjing, capital of east China's Jiangsu Province on Nov. 5, 2019. (Xinhua/Li Bo)

Aerial photo taken on Nov. 5, 2019 shows the scenery of the imperial Xiaoling Mausoleum, the burial site of the Ming Dynasty's (1368-1644) founding emperor Zhu Yuanzhang, in Nanjing, capital of east China's Jiangsu Province. (Xinhua/Li Bo)