The whole song has three major sections. The transition begins with a high-pitched tone characteristic of northern Shaanxi, and then the melody descends in a wave-like manner, paving the way for the narrative and description of the following paragraphs. Through straightforward and plain language, sometimes high-pitched and sometimes low-pitched melodies, and the alternate use of 2/4 and 3/4 beats, the sincere emotions are naturally revealed. Forced by life, the brother had to leave his dear sister and leave. Although the sister felt a thousand or ten thousand reluctances in her heart, she endured the pain in her heart and sent her brother on one journey after another, tightly. He held his brother's hand and looked at him again and again. Especially in "Tightly pulling my brother's sleeve, tears streaming from my belly", "tightly" and "woof" adopt a syncopated rhythm. The melody of the word "pull" is Boeing, while "wow" has a syncopated rhythm. "The melody is raised to fa, which enhances the expressiveness of the melody, and vividly, meticulously and contagiously depicts this scene of life and death.

In the old days, working people in Shanxi and Shaanxi, forced to make a living, often left their hometowns and went to Baotou and Hetao in Inner Mongolia to make a living, living a miserable life with no return in spring and autumn. Since one must pass through the west entrance of Gucheng from the Hequ area of ??Shanxi to western Inner Mongolia, this kind of outbound livelihood activity is called "walking to the west entrance". That’s where the song title comes from.

Composer Bao Yuankai once adapted the melody of a Shanxi minor tune - "Brother, please go to the west entrance. It is really difficult for me to keep my little sister. I will hold the brother's hand and send him to the gate" - as This orchestral piece vividly expresses the reluctance of a pair of lovers to leave with the tearful string timbre and delicate polyphonic parts.