摘要：The Left Hand of Darkness （abbr. LHD） is composed by Ursula Le Guin as a ＂thought experiment＂ to explore the postgender world on the planet of Gethen. By eradication of sexual difference and embracing the biological fluidity and psychological androgeny, dualism is deconstructed, and a postgender intersubjective space is reconstructed between Genly Ai and Estraven, interluded by cyborg myth and postgenderism culture narratives. Moreover, Le Guin suggests a possible transformation mode ofyin-yang cycle from psychoanalytic light and shadow.