Fortunately, Mo Fan was always prepared. He had deliberately left Darkness Seals on several girls from Licheng Afterglow Island.
Bei Jiang's Black Substance was indeed an incomparably powerful ability, and it was very practical, too. It was basically another eye he could use to track creatures or even people. His target couldn't evade him easily as long as the Darkness Seal held.
Mo Fan closed his eyes, and the whole world turned gray-black. The dark vein surged. It could strengthen Mo Fan's ability to search for the Darkness Seals. Sometimes if the target was too far away, the Darkness Seals would weaken and scatter. Mo Fan had to carefully look for the faint Black Substances if that was the case.
"That's weird… why can't I find them anywhere?" muttered Mo Fan. "It's impossible for them to travel very far in such a short time. It is unlikely that they have left Mingwu Ancient City."