It must be said, this inheritance from Nian Quan's Spiritual Pupil is quite comprehensive.
This family heritage, passed down through generations, mostly belongs to the type that is easy to learn but difficult to master, capable of integrating all basic Pupil Skills into a universally applicable Spiritual Pupil. In this way, it ensures that each generation has learners to continue the legacy, and if there are geniuses, their potential can be ensured as well.
In summary, it is very suitable for someone like An Jing, who has exceptional talent and needs to cope with a variety of different world situations as a Great Void Traveler.
Entering the True Spirit Eye poses no difficulty, primarily involving using Spirit Water as a base to nourish the eyes, tempering the pupils to elicit a strand of 'Pure Spirituality' most suitable for the cultivator's own awakening.