Steve's book - Japan

the sentence is: "Hong Kong is condensed exoticism on the edge of the largest and longest running culture show in the world, China. "
I couldn’t understand the expression ‘running culture’…
What does it mean?

“longest running” means that it has been going on for a long time, like a play or a movie showing.

I meant that there has been a continuity in Chinese culture that we have not seen in other cultures.