Levels 5–12 · 固本 · gu ben
Consolidation and Sealing
The first band beyond public knowledge. The literature says two things about it and no more: that healing and perception at a distance appear here, and that the practitioner must begin withdrawing from ordinary life because the stored charge becomes dangerous to bystanders and because worldly friction leaks it away faster than it can be replaced.
This band division is editorial. The sources do not group the levels above 4; this grouping follows the classical jing–qi–shen–xu progression to make the claimed path legible.
Core practice
Presumed: the same seated work, but longer, and with the emphasis moving from acquiring qi to preventing its loss.
Testing
Unknown. Presumed still teacher-verified by touch.
Classical stage
Qi (energy stabilised and made self-sustaining)
Time
Unknown — Chang implied decades