Does the design of a Shanghai highway interchange support an urban legend of the city’s ties to a mythical creature that supposedly once lay under the city?

Beneath Shanghai’s bustling highways supposedly lies a secret—one a widely circulated urban legend states the government once dismissed as superstition.

This is the story of a massive steel column that lies at the centre of an interchange—and the chilling warning that came with its creation. Is it just a folktale? Or did something truly ancient really slumber below?