1. First, align the side of the rice bag as shown in the picture to yourself, as shown in the picture below.

2. Pass the green thread on the rice bag through the yellow thread, and the thread of the rice bag will be untied, as shown in the picture below.

3. Untie the thread on the rice bag to the state as shown in the picture.

4. Pull the green line on the rice bag apart. See the picture below for details.

5. Next, just pull the rice bag open all the way, as shown in the figure.

6. Finally, the rice bag is opened, as shown in the picture below.