in the Elixir of Life symbols are used for the most part, and in them the fire of the Clinging (Li) is frequently compared to a bride, and the water of the Abyss to the boy (puer aeternus)
Wilhelm’s text identifies the Elixir of Life as a symbolic register encoding the union of opposing cosmic principles — Li (fire/anima) and K’an (water/animus) — whose misreading as literal sexual practice constitutes a fundamental hermeneutic error.
, The Secret of the Golden Flower: A Chinese Book of Life, 1931thesis