Vietnam traditional green bean cake with very unique box

A gift from a customer who recently visited Vietnam, at first sight of the box i thought it was some God-praying-materials or joss stick. Surprisingly, i've found out, the content inside it's traditional green bean cake from Vietnam. Looking at the wrapping, it didn't look like something we can eat and though the cutout windows on the box, i can see its packed with small little boxes, it looked like some matchbox-like fire crackers. .