Thunder-Conjuring Triune Sigil

Rain (雨)
Symbolizes the boundless generosity of the Heavenly Dao, derived from the Tao Te Ching passage: "When Heaven and Earth unite, sweet dew descends."

Gradual (渐)
Its hexagram corresponds to "Gradual Progress" (Feng Shan Jian) in the I Ching, representing step-by-step passage through hidden realms.

Ear (耳)
Signifies piercing through Yin and Yang, subduing the deepest underworld (Note: 耳 functions as a variant of 聻 jiàn – a mythical entity beyond ghosts in Taoist cosmology).

Core Principle of the Talisman:
"Harnessing the Primordial Qi to Command All Malign Forces"