Two bronze masks from Sanxingdui feature protruding eyes, large ears and exaggerated facial features characteristic of the ancient Shu civilization, which dates back to some 5,000 to 3,000 years ago. /CGTN

A bronze mask from Sanxingdui features protruding eyes, large ears and exaggerated facial features characteristic of the ancient Shu civilization, which dates back to some 5,000 to 3,000 years ago. /CGTN

A bronze mask from Sanxingdui features protruding eyes, large ears and exaggerated facial features characteristic of the ancient Shu civilization, which dates back to some 5,000 to 3,000 years ago. /CGTN

A bronze mask from Sanxingdui features protruding eyes, large ears and exaggerated facial features characteristic of the ancient Shu civilization, which dates back to some 5,000 to 3,000 years ago. /CGTN

A bronze mask from Sanxingdui features protruding eyes, large ears and exaggerated facial features characteristic of the ancient Shu civilization, which dates back to some 5,000 to 3,000 years ago. /CGTN

A bronze mask from Sanxingdui features protruding eyes, large ears and exaggerated facial features characteristic of the ancient Shu civilization, which dates back to some 5,000 to 3,000 years ago. /CGTN

A bronze mask from Sanxingdui features protruding eyes, large ears and exaggerated facial features characteristic of the ancient Shu civilization, which dates back to some 5,000 to 3,000 years ago. /CGTN

A bronze mask from Sanxingdui features protruding eyes, large ears and exaggerated facial features characteristic of the ancient Shu civilization, which dates back to some 5,000 to 3,000 years ago. /CGTN