? 20 cigarette butts can be exchanged for 1 egg. The purpose of this move is to let everyone form a good habit, that is, throw cigarette butts casually to protect their environment. It is understood that things happened recently in order to make everyone realize the importance of protecting the environment. In fact, everyone can see it at the scene, because many people also exchange eggs with their cigarette butts. We can also see that some people brought all kinds of tools full of cigarette butts.

? Many people began to go home immediately after hearing about this activity, hoping to mobilize the whole family to participate in this activity. Nowadays, many people are wearing gloves and holding plastic bags in their hands. They are also going to start picking up cigarette butts. They have come to the square, and everyone is bending down to pick up cigarette butts on the ground. In this activity, there is also a big storage box on the desktop. In the storage box, half a box of cigarette butts has been filled through everyone's efforts, and there are several piles of eggs on the side of the box. The staff who exchange eggs at the exchange point are also helping everyone to exchange activities while registering.

Through this activity, in fact, we can better realize that picking up cigarette butts is a handy action, but such a handy action can also make our environment better and better.

So to sum up, 20 cigarette butts can be exchanged for 1 egg, in order to make everyone form a good habit. We can protect the environment on which we live.