Why send postcards when traveling?

Postcards bought during the trip are all landscapes or humanities with local characteristics. It's interesting to buy local tickets, throw them into local mailboxes, stamp them with local postmarks and send postcards. \x0d\ 1。 Send it to yourself. Record the current travel mood, and when you get home, you can recall the mood when you travel again; \x0d\ 2。 Send it to friends. Let friends share the joy of traveling. \x0d\ 3。 I hope to remember this place where I have been. Postcards are an alternative to photos. \x0d\ 4。 Postcards of many tourist attractions have interesting postmarks and can also be used as collections. \x0d\ Postcard is a kind of card containing information, which can be mailed directly without an envelope and must be stamped. The front is in the form of an envelope, and the back has the function of stationery. The advantage is that you don't need an envelope, but the disadvantage is that there is little space and no privacy. It is also called "postal film". What is written on the postcard is public and can be seen by others. The content usually does not involve concerns about privacy, so it is called a clear letter. According to the description of China Post, ordinary people can print postcards by themselves, but they are not allowed to mark "China Post". So many people will call postcards issued by post offices "postal currency cards", while private printers call them "postal currency cards".