Sunny.

In the movie Yangtze River No. 7, the male protagonist Xiao Di is heartbroken because of the unexpected death of his father. The background music is a piece of pure music, Sunny.

The film "Yangtze River No. 7" tells the story of a father who accidentally found an alien toy dog ??and gave it to his son as a gift, which changed the lives of both father and son.