1. Make a U-shape with PVC pipes according to the size of the arch. After filling the two water seats with water, insert the PVC pipe into the water seats.

2. Blow balloons and tie them together to form a ball.

3. The two groups of balloons cross, and all the balloons are like the picture below. Two groups of balloons are placed crosswise and matched with colors (such as red and white, or blue and red, roughly arrange a game to see which one you like).

4. Insert the tied balloon into the base. It's simple. A balloon arch is completed.

Extended data:

Key points:

The base and column should be stable. The doors made of PVC and PPR pipes will be unstable if they are a little bit smaller, so the base is very important. The base must support the column.

It is better to use a thicker balloon, otherwise it will become very transparent and pale after inflation, and the tube in the middle can be seen through the balloon, which is not very beautiful.

Balloons should be the same size. If you use a pump, remember to hit each balloon a few times so that the balloons are about the same size. It's ugly when you're big and small.