March of the Volunteers is a song written by Tian Han and composed by Nie Er. It is the theme song of the movie "The Son of the Storm" and is called the horn of Chinese national liberation. Since the birth of 1935, it has played a great role in inspiring the patriotic enthusiasm of the people of China, and later became National Anthem of the People's Republic of China.

Brief introduction to the story of Fengyun children:

Xin Baihua is a poet. He has an extremely good friend, Liang Zhifu, a college student, both of whom are from the Northeast. After the "September 18th" broke out, they walked out of their hometown and lived a wandering life, but they never lost their confidence in life and looked forward to a bright future. On the second floor of Xin Baihua and Liang Zhifu lived a poor girl, A Feng, and her mother.

Xin Baihua and Liang Zhifu are very sympathetic to their mother and daughter and often help them. Later, Liang Zhifu was arrested and imprisoned for his relationship with revolutionaries. Xin Baihua fell in love with the rich widow. Mrs. Shi, a newly divorced young woman, is very fond of the new flowers, and the flowers are also attracted by Mrs. Shi. Feng's mother died, so she felt sorry for her and sent Feng to school.