"What is the method of containment? What happens if containment fails?"
"The containment method is to wrap it up when not in use and avoid aiming it at the outside world for long periods. Otherwise, it will spontaneously pull all nearby objects and even living people into the Mirror World, making it very difficult to find a way back to the normal world."
"Old Man John, could you appraise this relic for me?"
Shard thought about it and inquired.
"Are you thinking of selling it?"
The old man glanced at Shard:
"Although it's only Poet-Level, its containment method is simple and its effect is very practical. If you want to sell it to me, I'm willing to pay 1200 pounds."
Since Old John started with 1200 pounds, the upper limit would likely be around 1400 pounds. From this, it seemed that this relic was indeed one of the more valuable ones Shard had come across.
"I don't want to sell it for now."