Answer:
The Chinese word wu 巫 "shaman, wizard", indicating a person who can mediate with the powers generating things (the etymological meaning of "spirit", "god", or nomen agentis, virtus, energeia), was first recorded during the Shang dynasty (ca. 1600-1046 BCE), when a wu could be either sex. During the late Zhou dynasty (1045-256 BCE) wu was used to specify "female shaman; sorceress" as opposed to xi 覡 "male shaman; sorcerer" (which first appears in the 4th century BCE Guoyu). Other sex-differentiated shaman names include nanwu 男巫 for "male shaman; sorcerer; wizard"; and nüwu 女巫, wunü 巫女, wupo 巫婆, and wuyu 巫嫗 for "female shaman; sorceress; witch".
