For some of them who have been working in military bases, stations remembered when they first saw the rain. It was a feeling they can't express by just smiling and jumping under the raindrops. The people are silent instead as they tried so hard to make the memory last in the back of their memory. So, if ever the day comes that they are going to come back to the world where the sun never sets, they can remember how precious the time they had on the surface whenever the sky shared its rains to the little beings like them. Everywhere in the city has no luxury to see the real rain, all they have been the simulation inside of a fixed room, but such a matter concerning people’s primary needs. The water is something gold in the underground society. Clean water to drink is not very easy

