To direct the body with the mind, one must have adequate shen. Among other things, shen is developed from strong jing and qi. Stimuli also affect shen. Spiritual energy is further developed from, among others things, strong jing, qi, and shen. Thus, development is a three tiered process with each treasure s strength affecting that of the others.
Humanity likes to break things down to divide up the chaos into understandable units.
One may think of gaining one s jing, qi, or shen upon conception or birth or at anytime. When one gains the treasures is not necessarily important. What is important is that, once obtained, a treasure always exists at some level with a set of rules. This level is dynamic and changes according to the rules. The rules dictate the properties of new levels and when they occur, based on the current level and stimuli.