Camels must have likes to eat grass, not dead hay. But it is strange that camels are always looking for hay until it is full of stomach. A classmate in the edge of Xinjiang Turpan Basin told me that his family has two camels. He said that you can't imagine the appetite of camels, it can slowly swallow dozens of kilograms of hay. I asked students why camels didn't eat grass and eat hay. He said that camels were animals with strong psychological, it was afraid that the owner would let it pass the desert next day, and the dry grass in the stomach is more hunger than the grass. The endurance of camels is first-class, and the South only sees the outstanding performance of the camel, but very little understanding of the coming of the camel. Classmates said that camels are human nature, and the old camel will feel the meaning of the owner. Before the trek, it will be swallowed in the swallowing, and then the appearance of the morning light is waiting.