Is it a postcard or a postcard? why

This is a postcard. The contents written on the postcard are public and can be seen by others. Content usually does not involve concerns about privacy, so it is called Mingxin.

Postcards are cards with images written on them, which can be mailed directly without envelopes. Images can be photography, painting or design ... stamps with full face value must be affixed when posting? .

trait

A. Postage advertising postcards are based on the image of China Post and the strength of its huge communication network, with high advertising credibility.

B. Postcards are a way of communication that people are used to every day. They have a broad social consumption base and a friendly image.

C. Postage advertising postcards can enter the national and even global postal network circulation, and their advertisements spread widely, which can be said to be everywhere.

D. Postage advertising postcards are a new advertising medium with small profits but quick turnover, because its dissemination is "secondary", the sender and the recipient are both objective recipients of advertisements, and the advertising contact frequency is high.