The Soul Calming Jade belonged to the second type, it powers being depleted incessantly, needing constant replenishment to maintain its powers.
If Qiao Chu and the other companions wish to increase their spirit powers, they must not only use one type among the three but to combine them properly for them to achieve breakthroughs within a short span of time.
Jun Wu Yao then based it on their individual soul attributes to select magical artifacts suitable for the companions.
Although the permanent magical artifacts did not give intense effects, but they were prized on their stability and permanence and they would act as an item of nourishment and support, to assist them in their cultivation.