In fact, it involves the integration of the Gray Mist.
Or rather, it uses the Gray Mist to integrate some kind of concept.
Maintaining this concept itself also requires a certain consumption.
But compared to the rewards of its price, this consumption is negligible.
After all, this Golden Core itself can swiftly bring a person to the True Master Realm.
Also known as the level of the weakest Immortals.
The Gray Mist merely compensates for certain critical but not difficult flaws for the Gray Mist.
Under these circumstances, Shen Yu can completely predict that this Golden Core will inevitably become an extremely popular product.
After all, for any existence that hasn't reached the level of Longevity, immortality always holds a deadly attraction.
Not to mention, it also represents power.
At this moment, the Tang Emperor, whose realm has not yet reached the level of Longevity, found it hard to suppress his excitement upon hearing about this elixir.
