Go back to the main world and send it to a place with a lot of materials. Clean up a wave of mobs and have a new scene. There will be chandeliers and many reeds in the underworld, so you can take some back.

What is in my underworld?

Formation of new lower limit

Creatures in the soul canyon: evil spirits: soul sand and soul soil.

Main square of crimson forest: Hellfire Wart Square

Twisted forest creatures: the last main square in shadow people: twisted wart square

Lower bound wasteland (former lower bound) main square: Hellfire Rock

Creator of Basalt Delta: Magmatic Monster Main Square: Blackstone

New cube

Crimson and twisted wood: wooden stairs, doors, steps, trap doors, fences, doors, billboards, buttons, pressure plates.