"Mom, you have worked hard" is a song composed and sung by original music producer Zhou Yun.
Lyrics: You have raised children, love is a permanent concern, and your face is covered with wrinkles. Your hair has turned white, and I love you all my life. I will repay it with my life. I will always remember it. I've been homesick for years. Mom, you have worked hard and been busy at home for decades. You have never said a word of complaint, but I only hope that your children will grow up safely. You have never left home, but love came to this world with me.