This foreign song named "Bellaciao" ("Goodbye, Girl") is a euphemistic, beautiful, bold and tragic song. It was once widely circulated as an Italian guerrilla song, and was later quoted as a movie episode by this "Bridge". After "Bridge" was introduced to China, it spread like wildfire, or was hummed by people, or played with the popular accordion at that time, and it was very popular for a while. Today, the whistle and pipa of this song still reverberate from time to time, enduring for a long time.