What is this article mainly about?
Judges and witnesses in 12th century China
The history of sunglasses and why they were first worn
Popular things to wear in the 20th century
The history of lenses and who first wore glasses
Judges and witnesses in 12th century China
The history of sunglasses and why they were first worn
Popular things to wear in the 20th century
The history of lenses and who first wore glasses