This photo taken by Sotheby's shows the imperial musket which will be at auction on Nov. 9, 2016 at Sotheby's in London, Britain. The musket was created for the Qianlong Emperor of the Manchu Qing dynasty. (Xinhua)

This photo taken by Sotheby's shows the imperial musket which will be at auction on Nov. 9, 2016 at Sotheby's in London, Britain. The musket was created for the Qianlong Emperor of the Manchu Qing dynasty. (Xinhua)

This photo taken by Sotheby's shows the imperial musket which will be at auction on Nov. 9, 2016 at Sotheby's in London, Britain. The musket was created for the Qianlong Emperor of the Manchu Qing dynasty. (Xinhua)

This photo taken by Sotheby's shows the imperial musket which will be at auction on Nov. 9, 2016 at Sotheby's in London, Britain. The musket was created for the Qianlong Emperor of the Manchu Qing dynasty. (Xinhua)

Source: english.qianlong.com