Envelope generally refers to a kind of bag-like packaging that people use to send letters and keep the contents of letters confidential. Envelopes are usually made into rectangular paper bags It also refers to the envelope basin (Sichuan basin), the book Envelope published by Yilin Publishing House, and Trojan envelopes, such as QQ envelopes.
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Envelope souvenir
1. The first set of ordinary postage envelopes in New China was issued in 1956, and the postage map of Pu9 was printed on the envelope.
2. During the Cultural Revolution, the Ministry of Posts and Telecommunications issued postage envelopes with quotations from Mao Zedong in 1967. The picture on the stamp is Tiananmen Square, and quotations from Chairman Mao are in the lower left corner. A full set of 20 pieces, with a face value of 8 cents, printed by Beijing Stamp Factory.
3. During the Cultural Revolution, from 1967 to 1974, the Ministry of Posts and Telecommunications successively issued quotation postage envelopes, woodcut postage map envelopes and Tiananmen postage map envelopes, collectively referred to as "Cultural Revolution" postage envelopes.
4. During the "Cultural Revolution", the Ministry of Posts and Telecommunications issued woodcut postage map envelopes in June 1.970-June 1.973, with postage patterns of Daqing people, Dazhai people, poor peasants studying, and military-civilian joint defense, with a full set of 20 pieces, with a face value of 8 cents 65438.