How to make annular bubbles by hand under water

First of all, we have to create some bubbles in the water, such as breaking off the respirator when diving, or patting the water with water facing the water surface when swimming. Then, we make a fist in the broken bubble, let the knuckles on the two fists combine and push the combined hands forward together. During this period, the wrist needs to exert strength, and then the fist is naturally separated. Be careful not to let this force travel too far, just keep the distance of 10 cm. During this period, the wrist must be exerted, basically once or twice. With more practice, you can play the water circle underwater. Usually, I stopped to practice for more than a month because I still have work. I wish you all learn this magical skill as soon as possible.