1, cut the top and bottom of the coke can.

2, cut, wear a straw.

3. Insert two straws and fix them with glue.

4. The gap of this power system is also glued together.

5. After completion, as shown in the figure, there is no air leakage except for the suction pipe hole.

6. Make a small hole in the bottom of the jar, put the straw in and seal it with glue to avoid water leakage.

7. In addition, make a hut out of cans. If you feel trouble, you can skip this step.

8. Inject water into the power system with a needle and ignite it.