My home is in the northeast, on the Songhua River. What is the background of this song

In 1936, Chiang Kai-shek drove to the front line of the "suppression of ****" of the Northeast Army officers and soldiers, with their families, covered the streets of Xi'an. They were forced into exile in Guannai, home can not return, there is revenge can not be reported, but for the anti-*** anti-people's civil war to sell their lives, everyone's heart is depressed with grief and bitterness and resentment, to vomit, to explode ....... At that time was teaching in Xi'an two Zhang Hanhui, every day to see this wandering wandering miserable scene, ear drums full of contempt for the pain of the call, so they composed this heartfelt solo song, with tears crying like tone, sang the voice of grief and indignation, Zhang Hanhui once said: "I put the northern 'motherhood Zhang Hanhui once said, "I've turned the kind of crying that northern 'ladies' do when they cry for their husbands and sons at the graveside into the tune of 'Songhua River'. Of course, it had to be changed a bit before it became ......." The structure of the song is a two-part form with a coda. The confessional tone runs throughout the song, which is both narrative and lyrical, and is genuinely touching. The melody unfolds in a ringing, haunting, repetitive chant that leads to increasing emotional excitement and has an evocative effect. The song reaches its climax when the melody is like a cry for heaven and earth at the end of the song, which contains the power to demand to rise up and fight in the midst of the tearful grief. After Zhang Hanhui composed the song, he first taught the students of No.2 Middle School to sing it, and then it was sung by the student team of the Northeast Army, and soon spread to the Northeast Army; in November 1936, before and after the outbreak of the Xi'an Incident, the song "On the River of Pine Blossoms" was sung everywhere in Xi'an and quickly spread throughout the country, and the work played the role of awakening the people at that time. After the liberation, the large-scale music and dance history of the city has been realized. After the liberation, the large-scale music and dance epic "East is Red" also chose this song.