Do you know that there is an invisible thing in this world? It can be seen and touched, but it is indeed invisible. But they are all around us, everywhere. So are you ready to hear our story about them...
[Despite the long name of the author, we are two people. After each story is completed, there will be a corresponding author's name. As students, the two of us initially promise to write one story per week during the holidays. I don't know the school days~]