Bloodstone

Harren was hesitating a bit. Although he already had some first-hand knowledge of Lin Yun's abilities, the matter was too incredible this time. Solidifying a Planar Path was at least over a hundred times more troublesome than opening a temporary path.

That gap was comparable to the gap between an ordinary Master Alchemist and a formidable Artisan. It could even be said that the difficulty couldn't be represented in terms of rank… It was completely incomparable.

As for Sky City's alchemists, they were currently led by an Artisan and had four Master Alchemists and a dozen Great Alchemists. Yet after such a long time, they had yet to even open the Planar Path, let alone solidifying a Planar Path.

This was a huge gap, something impossible. If they had been able to solidify a Planar Path in the past, human forces wouldn't have had to wait every time for the Raging Flame Battlefield to open before being able to enter.