I think there are many classic TV series from the 80s and 90s, especially the theme songs. Whenever the music sounds, everyone will hum along:

1. The theme song "Shanghai Beach" from "Shanghai Beach".

2. The theme song "Dare to Ask Where the Road Is" from "Journey to the West".

3. The theme song "Rolling Water of the Yangtze River East" in "The Romance of the Three Kingdoms".