迷 = fan / enthusiast / one infatuated with. Builds many fan-words:
球迷 (qiúmí, sports fan),
歌迷 (gēmí, music fan),
影迷 (yǐngmí, film fan — short for
电影迷),
书迷 (shūmí, bookworm),
戏迷 (xìmí, opera buff). Note
迷 itself literally means "lost / bewildered" — a fan is, charmingly, someone lost in their passion.