C520 Be sure to come back

The wind stopped and he left. Leaning on the door, I listened to the bustle of people coming and going outside. Inside the door, it was as if there was a world of tranquility. Who said that those who left would eventually come back. No matter how far they were, no matter how far they were, they would always try their best to come back here from the other side of the sky.

After sending them away