What is the main content of "A Night at Lugou"? Compared with the introduction to Marco Polo Bridge in the text, what is the difference in writing style?

"Sleeping at Lugou at Night" is a prose, which mainly writes about the scene when watching the "Dawn Moon in Lugou". The author focuses on the moonlight and the flowing water under the bridge, and finally writes about the Marco Polo Bridge itself as if the clouds are supporting the moon. With the previous rendering, the Marco Polo Bridge leaves a beautiful and moving impression on the readers.

The introduction to the Marco Polo Bridge in the text is an expository text, which basically introduces the characteristics of the Marco Polo Bridge objectively and plainly. Even if there is some imitation of the appearance, it is to explain the relevant content clearly, not to describe the scenery and express emotions. .

Extended information:

There are stone railings on both sides of the Marco Polo Bridge. Stone lions are carved on the pillars of the railings, and a stone watch stands at the head of the bridge. There are 279 stone railings on the south side and 139 on the south side. The average height of the fence is about 85 cm, and the cross-section is larger at the bottom and smaller at the top. The bottom thickness is about 23-30 cm, and the top thickness is about 20-25 cm. The harvesting performance is more obvious.

The interior of the railing includes vertical beams, galls and other parts. The Xunzhang is octagonal, but the four corners have been removed. The neck part is not hollow, but vaguely shows the shape of a bottle. The shape is thick, which is quite different from the style of the treasure vase of the Ming and Qing Dynasties. Most of the patterns are cloud-head patterns, showing the characteristics of simplicity and reflecting the "cloud arch" flavor of the "Create French Style" stone railings.

The components of the skirt board include upper beams and panels, which are similar in style to the stone railings of the Ming and Qing Dynasties. However, the overall flatness is obvious, and there are no vertical beams in the middle.