A visitor looks at a crown worn by a queen from the Qing Dynasty (1644-1911) for her marriage ceremony at the Palace Museum, also known as the Forbidden City, on Sept 10, 2020. The Palace Museum is holding an exhibition to celebrate its 600th anniversary. [Photo by Jiang Dong/chinadaily.com.cm]

A visitor looks at a cup used by Emperor Qianlong at the Palace Museum, also known as the Forbidden City, on Sept 10, 2020. [Photo by Jiang Dong/chinadaily.com.cm]

The Palace Museum is holding an exhibition to celebrate its 600th anniversary. The exhibition launched on Sept 10, 2020. [Photo by Jiang Dong/chinadaily.com.cm]

A visitor looks at portraits of emperors from the Qing Dynasty during an exhibition at the Palace Museum, also known as the Forbidden City, in Beijing on Sept 10, 2020. [Photo by Jiang Dong/chinadaily.com.cm]

A visitor takes photos of plaques at an exhibition at the Palace Museum, also known as the Forbidden City, in Beijing on Sept 10, 2020. [Photo by Jiang Dong/chinadaily.com.cm]