The "Hainish Cycle" is a series of science fiction novels and stories written by Ursula K. Le Guin. Set in a shared universe, these works explore various planets, cultures, and societies, primarily focusing on the planet Hain and its connections to other worlds. The cycle examines themes of communication, gender, and the impact of culture on human behavior. Each story within the Hainish Cycle features different characters and settings but is linked by the concept of interplanetary travel and the Ekumen, a collective of planets that share knowledge and resources. The narratives often challenge societal norms and encourage readers to consider diverse perspectives on humanity.