Fireworks homemade course

Fireworks homemade tutorial is as follows:

First, the first step is to prepare more than twenty colored square pieces of paper.

Second, the second step is to fold the paper pair into a rectangle, then into a square, and then unfold it.

Third, the third step is to fold the diagonal into a triangle and expand it into a double triangle.

Fourth, the fourth step, repeat the previous steps, fold more than 20 sheets of paper like this, and then cross them in turn.

Fifth, the fifth step, such a homemade fireworks is completed.