Find out the sentences describing the interior decoration in Liu Bo in the fourth paragraph, and talk about how the author wrote them.

Its main task is to remember whose narrative expresses people's personality characteristics and the causal relationship between things. People always live in a certain social environment and natural environment, and things always have their specific historical background and specific real life scenes. Only the writer, this story is closely related to the social and natural environment, historical background and realistic scenes, and the characters and stories have a three-dimensional sense and a sense of substance, which is truly credible, full and vivid. The environment is excellent, describing the scenes, characters and stories that are often talked about, and substantively integrating the internal components of organic people and things. Successful description of environment and scenery can also render the atmosphere and express the theme.