Tortoise

This morning, I was awakened by the voice of "Shasha". What kind of strange sound is it made? I quickly got out of bed, take a closer look, black! It is this turtle. I saw that the big tortoise kept his armor on the sandstone. With the sound of "shasha", a thin layer of gray powder appeared on the ground. strange! Why do turtles wear off their shells? Doesn't he feel pain at all? I asked my grandmother why, my grandmother told me: "It is a hard nail bag that makes it uncomfortable. He is either A, or grow up." Hey! The book also said that snake skin, clam shell, turtle grinding armor.