1. Great cost savings. For example, I want to send something to a friend in New York in Beijing. I sent a set of data in the past, the local printer can produce it, and then send it to my friend's house by courier. This is much easier than sending me a ticket from Beijing to New York. The festival saves transportation costs.

2, to meet the needs of personalized customization. For example, I want to give the children a unique toy that they have created.