「Intimidating」「threads twisted」as the HEAVY ROPE around the periphery of a fishing net for tossing it out, and that must be strong enough to haul it back in with the full catch of seafood.
　The conceptual analogy of deity-types and religious figures using fishing nets to snag prey and haul in the bounty is also not unfamiliar to religious adherents of Christianity, but these Chinese legends predate fisherman Simon Peter, and other fishers of men. Snagging schools of fish in nets en masse to sell or devour, in addition to the hauling-them-in rope and strong periphery to prevent any escapees may contribute to the meaning of a religious MORAL CODE OF ETHICS (albeit not one to be proud of), the GUIDING PRINCIPLE of life, a KEY LINK: powerful intimidation. Note the Taoist sages were not fond of religions, and more likely were referring to precautions surrounding sexually transmitted diseases, and/or being snagged into long-term relationships, and/or stating that life is filled with folks more powerful than you are reaming and shafting you anally, without any respite.
　Alternatively,「ejaculation while in stance between spread legs with emerging glans spurting」is another satirical reference to a MORAL CODE OF ETHICS, one that seems to espouse taking any advantage possible while in a stronger position over weaker prey as the fishermen do with the fish and as the clergy do with the laity (the「laid people」), and also seems reflect the GUIDING PRINCIPLE, the KEY LINK between male and female, at least from the male perspective: snare as many as you can, do not allow even the small fry to escape, and use powerful intimidation for your own purposes…so, how do moral codes of ethics and guiding principles relate to fishing, if the meaning is otherwise?
　Euphemisms such as BRAIDED, twisted CORD, MULTI-COLORED STRANDS or ROPE describe various colors of penile emissions when infected consisting of whitish semen, clear bulbourethral fluid, greenish and/or yellowish pus and gleet, red, brown, and/or black blood, and so on, often with chunky bits.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: head rope of a fishing net; guiding principle; key link; class (taxonomy); outline; program
Japanese: class, rope, grand champion's braided belt
Unihan extended: heavy rope, hawser; main points
EDRDG: hawser; class (genus); rope; cord; cable