Some 50 precious stamps are on display at an exhibition in Beijing, on Nov 26, 2020. (Photos: chinadaily.com.cn)

Visitors take photos at an exhibition showcasing some 50 precious stamps in Beijing, on Nov 26, 2020.

Visitors review rare stamps at an exhibition showcasing some 50 precious stamps in Beijing, on Nov 26, 2020.

Visitors take photos at an exhibition showcasing some 50 precious stamps in Beijing, on Nov 26, 2020.

A precious stamp is on display at an exhibition in Beijing, on Nov 26, 2020.