A girl displays the commemorative envelop with cachet during a ceremony in Beijing, capital of China, July 31, 2017. China Post on July 31 issued a commemorative envelop and related cachet to mark the 2nd anniversary of successful bid to 2022 Winter Olympic Games.[Photo/Xinhua]
Guests unveil the commemorative envelop during a ceremony in Beijing, capital of China, July 31, 2017. China Post on July 31 issued a commemorative envelop and related cachet to mark the 2nd anniversary of successful bid to 2022 Winter Olympic Games.[Photo/Xinhua]
Citizens buy the commemorative envelop and related postal products in Beijing, capital of China, July 31, 2017. China Post on July 31 issued a commemorative envelop and related cachet to mark the 2nd anniversary of successful bid to 2022 Winter Olympic Games. [Photo/Xinhua]
A girl puts a commemorative envelop in the mailbox during a ceremony in Beijing, capital of China, July 31, 2017. China Post on July 31 issued a commemorative envelop and related cachet to mark the 2nd anniversary of successful bid to 2022 Winter Olympic Games. [Photo/Xinhua]
