The Blue Sky Eliminates Dust

''Blue Sky......'' "The beginning is empty, the ending is empty..." A vague voice called, like a dream but not a dream. Although the "crystals" on the shelves were delivered by that person as usual, there were less and less "crystals" delivered. "I can't remember clearly. His appearance is really not very memorable, but his smile is very impressive. That smile is full of joy, sadness, sorrow, relief..." Qingkong opened his eyes and found that this was a strange world...