You must complete the quest " Surreptitious Seven-Star Seal Sundering " by destroying bedrock keys with Bedrock Fragments. Key Quests:
An indispensable gadget for illuminating dark areas, finding treasure, and solving puzzles (upgrade it for better results). You must complete the quest " Surreptitious Seven-Star
Defeating them grants items necessary for unlocking a secret room in the Upside Down City. You must complete the quest " Surreptitious Seven-Star