In Rome, Italy, facing the second-century Emanuel, walk about 15 minutes along the Marseille Theatre Avenue on the right hand side to the Church of the Virgin of Cosmetin, which is small and quiet, but has the famous "mouth of truth" of the world. The mouth of truth (Bocca della verità) is a marble carving, similar to a human face, nose and eyes, with a large mouth, located on the porch of the Church of Our Lady of Rome, Greece, Italy. According to legend, if he does not tell the truth, he will bite his hand. Visitors who come here to see the tourists have reached into their mouths to try whether their hands will be bitten. Since thousands of hands are stretched out in the mouth of truth, this big mouth has been polished by people's fingers. The mouth of truth is also surrounded by Roman monuments, you can stroll slowly.