X is for Xian
Xian (Chinese: 仙/仚/僊; pinyin: xiān; Wade–Giles: hsien) refers to a person or similar entity having a long life or being immortal. The concept of xian has different implications dependent upon the specific context: philosophical, religious, mythological, or other symbolic or cultural occurrence.
Xian semantically developed from meaning spiritual “immortality; enlightenment”, to physical “immortality; longevity” involving methods such as alchemy, breath meditation, and tai chi chuan, and eventually to legendary and figurative “immortality”.
They are immune to heat and cold, untouched by the elements, and can fly, mounting upward with a fluttering motion. They dwell apart from the chaotic world of man, subsist on air and dew, are not anxious like ordinary people, and have the smooth skin and innocent faces of children. The transcendents live an effortless existence that is best described as spontaneous. They recall the ancient Indian ascetics and holy men known as ṛṣi who possessed similar traits. ~ Wikipedia