This landscape oil painting depicts the tranquility and beauty of a city under the sunset. In the picture, the afterglow of the sunset falls on the buildings and streets, giving people a warm and peaceful feeling. The blue sky serves as the background, highlighting the outline of the city, making the entire picture appear more open and transparent.

Firstly, the presence of the sunset is one of the core elements of this painting. The golden glow of the sunset not only coats the buildings with a warm coat, but also casts soft shadows on the streets, adding a sense of hierarchy and three dimensionality to the picture. The rays of the setting sun reflect off the surface of the building, creating a rich variety of color changes, from golden to orange red, and then to dark brown, with a natural and harmonious transition of colors.

Secondly, the blue sky plays an important decorative role in this painting. The blue sky as a background not only provides a sharp contrast, making the colors of the buildings more prominent, but also adds a peaceful and open atmosphere. The faint clouds in the sky seem to be telling the end of the day and the arrival of night, adding a touch of dynamism to the picture.

The building is the main part of this painting. The dense arrangement of buildings of various heights and styles showcases the prosperity and diversity of the city. The details of the building are exquisitely crafted, and every window and roof is filled with a sense of life. The colors of the buildings become more diverse under the sunset, with some buildings presenting a warm orange color while others maintain a steady brown color. The overall color tone is unified yet varied.

The street plays a role in guiding the line of sight in the picture. The wide streets extend from the foreground to the distance, giving people a sense of depth and space. Although there are some vehicles and shadows on the streets, they overall appear quiet and peaceful, as if the city has entered a moment of rest under the reflection of the sunset.

This landscape oil painting cleverly combines the sunset, blue sky, buildings, and streets to showcase the unique charm of a city at dusk. The warm colors and harmonious composition give people a sense of tranquility and vitality.