Tools/raw materials: pump, measuring ruler, 6-inch tail ball, 5-inch ball.

1. First, inflate the six-inch tail gas ball as shown in the figure below, and the inflation size is six inches.

2. Next, we should do some ball matching, that is, connect two white four-inch balls together and stick them on the tail ball, as shown in the figure below.

3, and then number according to the picture below.

4. Then make the shape of the unilateral center according to the style shown below.

5. The effect diagram is as follows.

6. Then we make a second unilateral heart in the same way, and then add two hearts in the middle of a test tube.

7. Then connect two plane centers with a white tail ball to make them solid centers.

8. After the final connection, as shown in the figure below, such a solid center is completed.