In this world, the practice of cultivation from the Seventh Heavenly Layer to the Ninth Heavenly Layer is collectively referred to as the Upper Three Heavens. The Seventh Heavenly Layer Realm is the starting point of the Upper Three Heavens. Within the various major Taoist Inheritances, this is an extremely important checkpoint.
For the internal members of the Taoist Sect, the Seventh Heavenly Layer Realm for the Alchemy Cauldron Sect is known as Nascent Soul or forming nascent. This stage originates from the Sixth Heavenly Layer's Tao Fetus Realm; one casts off the fetal form to become an infant, with both life and Spiritual Soul undergoing further transformation.
