The horse symbolizes unrestrained, exuberant vitality and enthusiasm, which is the most basic and basic symbol of the horse. Extension can symbolize prosperity, development, courage and conquest. If we extend it further, it may also symbolize king, father, authority, or health. ?
In ancient times, the fastest means of transportation was horses, so in ancient times, in addition to the so-called "Hongyan delivering books", the most reliable and common ways of delivering letters were various post offices.