Zhì 志 — Kidney will
Housed spirit seat
Will-power: endurance, resolve, and the drive that carries intent to completion. Housed by the Kidney zàng, water-natured, rooted in jīng. Rendered at the lower-abdominal kidney-qì field rather than the retroperitoneal organs themselves.
Point 5 of 5 in Wǔ Shén — Five Spirits at the Five Zàng (五神)
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Huangdi Neijing · Lingshu (primary_canonical)
Ch. 8 (Běn shén) assigns each of the five spirits to its zàng: shén–Heart, hún–Liver, pò–Lung, yì–Spleen, zhì–Kidney.
N. Wiseman & A. Ellis, Practical Dictionary of Chinese Medicine (secondary)
Standard translations of the five spirits and their faculties.