Snapshots from Asia: Phallic Sea Cucumbers

A friend of mine has a "theory" regarding Traditional Chinese Medicine (TCM). He reckons TCM stems from a simplistic belief the Chinese have: food resembling body parts must be beneficial for those same body parts. For instance, walnuts resemble the brain and are therefore nourishing for the brain. Ginseng roots look like little men (or voodoo dolls) and so are considered therapeutic for total body wellness. I'm no TCM expert, but a cursory search online indicates "ancient Chinese doctrines" (no citation whatsoever) support my friend's theory...
Add to this list the prized (and pricey) sea cucumber. With it's decidedly phallic appearance and behavior—"on being kneaded or disturbed slightly with fingers...it swells and stiffens, releasing a jet of water from one end...after releasing the jet, it looses its stiffness and reverts to its original state"—it's no great leap of the imagination deducing what the Chinese reckon it valuable for.