In fact, not only will balloons be released at various activities to represent our wishes, but whenever there is a rally in town, vendors will also grab many hydrogen balloons of various cartoon characters to attract children's attention and let them buy them. But one time, the balloon was accidentally released. At this time, I can only watch the hydrogen balloon fly higher and higher, and I am bored by myself.
On the second day of the second lunar month, a large-scale rally will be held in my hometown. "Dragon heads up on the second day of the second lunar month" is not only a growing number of street vendors, but also a special celebration parade. On this day, the whole city seems to be boiling. At the same time, there are more and more hydrogen balloons flying in the sky because they are not carefully grasped. When I was young, a group of children would excitedly shout to our friends, "Look, look, another balloon is flying." Then stare at the balloon until it is out of sight.
At that time, I always thought that these balloons would fly into the sky. Where did they finally fly to? Will they fly all the time, into outer space? This question has been bothering me for many years, and I have been wondering where these balloons will eventually fly. It wasn't until I grew up in high school that I knew that after these balloons flew to a certain height, the hydrogen in the hydrogen balloon would slowly expand because of the increasing pressure, and finally, with a bang, it exploded.
I have to say, I was a little disillusioned when I saw that my fantasy would fly higher and higher when I was a child, and the hydrogen balloon that eventually flew out of the universe would explode when it reached a certain height. However, if the child is innocent, it is also a wonderful thing to have beautiful fantasies.
Finally, hydrogen balloons are also in danger of explosion in low places, and they will also explode when exposed to open flames or high temperatures. Therefore, if children like hydrogen balloons, they must pay attention.