Inside the Netherworld prison, Lin Bai injected a thread of spirit energy into the small cauldron. With a buzz, the small cauldron emitted a dazzling golden light. A quarter of the prison area was illuminated.
After Lin Bai's previous attempts, he found that if he injected only a little bit of spirit energy, the small cauldron would only emit a dazzling golden light. It could be used as a lamp. If he needed to use the small cauldron to illuminate for a long time, it would not consume too much spiritual power.
However, if someone heard that Lin Bai used such a small cauldron as a lamp, many people would probably spit out blood and die.
"As expected!"
Lin Bai looked at the ground. There were tiny protrusions that were expanding and growing at a rapid speed. This was just as he had guessed.