This Dark Dimension Space wasn't originally on Old Tan; after Old Tan got hit with the mark, the Dark Dimension Space ran over to him by itself and sucked the Copper Coin inside.
This process is hard to wrap your head around—is this a Craftsmanship Method, or some other means?
Li Banfeng spun the Copper Coin between his fingertips; this thing really needed to be handed over to his wife for a good study.
The high-rise, the Copper Coin, the Dark Dimension Space… Mr. Kong Fang can do more than fight; his Technique use is downright unusual.
...
Tan Jinxiao woke up and stared at the Copper Coin in Li Banfeng's hand, blurting, "This is the mark?"
Li Banfeng gave a slight nod.
Tan Jinxiao took the Copper Coin and looked it over, his hand trembling a bit.
He'd thought he'd never shake this mark for the rest of his life; he never expected there'd actually be a day someone could pull this thing out.
