The three selected works are all Mr. Zhao's poems. One of them is called "Qingyun County Records": "After more than five years of compiling records, my clothes are getting wider and sweaty. Although the ambition is not finished, the person who travels a hundred miles is half ninety. " The second is to recite the "Jujube Tree" in the Tang Dynasty: "Tianjin ancient rivers and streams have flowed for thousands of years and are flourishing. See the vicissitudes of life, see the ups and downs, and pass them on from generation to generation. The hero of the crock is used to tying horses, and the prince sweeps away the fog in the north. Children and grandchildren are all over the earth, and clear shadows and red fruits benefit the world. " The third topic is the ancient poplar: "The towering trees began to grow seedlings, and the ancestors worked hard to water them. The shade of the tree wants to envy the predecessors and benefit future generations. " Poetry and books set each other off and become interesting, which can be called double wall.