Secret Greeting Card / greeting card

Greeting cards for contact and exchanged greetings feelings are an essential means of promoting harmony. Typically, cards are written in the margin of the text to send out. We delivered a slight change to it, give it a little creativity, and innovation.
Secret greeting card is inspired by the "Wordless Book" from martial arts novel.It necessary to interpret by the light. It helps people express their subtle emotions, and more of a fun.