That's why his master didn't want to agree too readily.
Otherwise, with High Level Immortal Body already being the best talent for Immortal Cultivation, why wouldn't his master agree to the other party?
It's simply because the Pure Liquor Fire is too precious.
After all, a High Level Immortal Body does not guarantee extreme achievement. It still depends on the other party's comprehension and nature.
According to his master, it's true that only those with a High Level Immortal Body are worthy of them using the Pure Liquor Fire, but it must be after the person with the Immortal Body matures, and only when their nature and comprehension are sufficiently high should the Pure Liquor Fire be used.
To set a standard, his master said, only a disciple with a High Level Immortal Body that reaches the Ten Different Phenomena Golden Elixir Great Perfection deserves for them of Liquor Fire Peak to use the Pure Liquor Fire!