Despite the spell being very complex and difficult to understand, and the hand seals hard to memorize, for other martial artists, just committing these things to memory without any mistakes would probably take a year or two.
Yet for Ling Xiao, this was not an issue at all.
With his Tai Chi Eye's powerful abilities to analyze, practice, and even replicate, remembering these things, even without understanding them, he could display them exactly as they were.
Soon, his mental state became utterly serene.
He had his most trusted subordinates guarding outside; he didn't need to worry unnecessarily, which allowed him to concentrate fully on his cultivation.
It could be said his mind was as still as water.
The moment he completely calmed down, a deep, pitch-black tunnel suddenly appeared in his mind, and this tunnel became extremely clear, as if he were walking inside it.
