In the middle of the night, a young man named "Mo xiao" walks into the mountains. He tells us that he has come to the mountains via a cable car because it is very dangerous at night. Ten years ago, a huge accident took place at a military factory. Many people went missing, including his parents. A few days ago an anonymous letter arrived from an unknown source, asking him to come to a nearby hospital and find out what happened. The young man wants to see a picture of his parents so that he can tell them the truth. He asks the young man at the animation studio to come with him to the hospital and see the picture and the anonymous letter. The man is surprised to find that the man is actually a young woman named "yan jin" . He thinks that this is a miracle because he had not expected to see someone at this time of night. He also thinks that the young woman must have an unusual reason for coming to the valley at this late hour. He says that he is "fei fang" , which means "I'm