In a normal situation, only cultivators with high realms were capable of soul space transference since the magic required was also considerably advanced. Normally, a Soul Formation cultivator could only use grade five spells at the most, Perfected Beings grade six, Itinerant Immortals grade seven and True Immortals could use grade eight spells.
The spell for soul space transference was an advanced grade eight spell.
However, there was still a risk of failure with this grade eight spell, and in the worst case scenario, it could even destroy the soul space. Thus, Daoist Guang had taken a huge risk back then when he had implanted the soul space into the heavenly fissure stone.
But Wang Ling could completely disregard this.