A set of commemorative stamps featuring five venues for the Olympic Winter Games Beijing 2022 are released in Beijing, China, June 21, 2021. /CFP

Issued by China Post, the set includes the National Aquatics Center, Big Air Shougang, the National Ski Jumping Center, the National Sliding Center and the National Speed Skating Oval, worths 10.8 yuan ($1.67). /CFP

Also known as the Water Cube, the National Aquatics Center was the swimming and diving venue at the Beijing 2008 Summer Olympics. It will be transformed into a curling rink for Winter Olympics Beijing 2022. /CFP

As the first of its kind across the globe, Big Air Shougang is the venue for free ski and snowboard big air competitions. /CFP

Looking like traditional Chinese decoration Ruyi, the National Ski Jumping Center will host Nordic combined and ski jumping competitions. /CFP

The National Sliding Center will host bobsleigh, skeleton and luge competitions. /CFP

Nicknamed the "Ice Ribbon," the National Speed Skating Oval is Asia's largest speed skating stadium covering 12,000 square meters with 12,000 seats. /CFP