The whole poem is: I don't see my mother's voice in my dream, but I wake up in the middle of the night and play a sad voice. There is no hope in front of the loving mother, and tears are shed on the way home.
The meaning of this poem is: the mother is dead and the mother (daughter) loves her deeply. I often look for my mother in my dreams, but I can't see her. After waking up, I shed tears of sadness. I hope mother and son will meet, and it is difficult to walk in a sad mood.