After the founding of New China, at the first national postal congress, participants agreed that green symbolizes peace, youth, exuberance and prosperity, so they decided to adopt green as the special color of China postal symbol.
There is no uniform regulation in the world on what color to use as the special postal logo, such as British red, American gray, Swiss orange and China green.
As early as the Han Dynasty, the court stipulated that postmen should wear red headscarves and red and white envelopes. Its purpose is to let pedestrians along the road see that the postman Pegasus has run away and make way quickly. After the Opium War, the customs of the Qing government piloted postal service. At that time, the ruling British stipulated that messengers and boatmen should wear navy jackets with four red characters on their chests. At 1905, the French are in charge of postal service, and yellow is the standard postal special color. After the founding of New China, at the first national postal congress, participants agreed that green symbolizes peace, youth, exuberance and prosperity, so they decided to adopt green as the special color of China postal symbol.
Since the advent of special postal vehicles 100 years ago, red, green and yellow postal vehicles have been widely used in various countries. Among them, yellow has the most classification, which can be divided into medium yellow, orange yellow, rhubarb and so on. In some European countries, yellow mail means "fast" and "punctual". Postal vehicles in Switzerland and other countries are orange, which means "safety". Most members of the Commonwealth use red and scarlet mail carts. In countries such as Malaysia and Australia, except Britain, mail trucks are the same color as "fire engines" all over the world, but the "car emblem" is different. This color means "emergency", "warning" and "fast", and it also enjoys priority right of way in traffic management. Postal vehicles in North Korea and Japan are also green.