Taoism (道教): Taoist practitioners xiūliàn to achieve harmony with the Dao (the Way), improve health, extend life, and in some traditions, even attain immortality (成仙). This involves meditation, specific breathing exercises (qigong), and ethical conduct.
Buddhism (佛教): Buddhist monks and laypeople xiūliàn to purify the mind, eliminate worldly desires, and ultimately achieve enlightenment or nirvana. Here, the focus is on mental and spiritual discipline.
Martial Arts (武术): In Chinese martial arts (kung fu), one doesn't just “practice” moves. One engages in xiūliàn to cultivate not only physical prowess but also mental fortitude, discipline, and inner energy (气, qì).
Wuxia and Xianxia (武侠/仙侠): This term is absolutely central to these popular genres of fantasy fiction. Protagonists embark on epic journeys of xiūliàn, training for years in seclusion to gain superhuman strength, magical powers, and immortality.