The character for qi hides a pot of steaming rice
Qi, the vital force of Chinese philosophy, literally means vapour, air or breath. Its oldest written form was three wavy lines on Shang oracle bones. Around the Han dynasty, scribes added the sign for rice beneath, picturing steam rising from cooking grain, an image of a world always changing.
Traditional thought treats qi as a life force present in every living thing, one whose free flow underpins good health. It features in traditional Chinese medicine and martial arts, and the practice of cultivating and balancing it is called qigong. Chinese gods and immortals were sometimes imagined as possessing qi too, concentrated in particular body parts, mirroring humans in miniature. Modern science does not recognise it: once prescientific, the concept is now classed as pseudoscience, unrelated to energy in the physicist's sense.
The word is remarkably flexible. One major Chinese dictionary lists 23 senses for the qi reading, and a modern Chinese-English dictionary offers meanings such as gas, smell, morale, atmosphere and anger, while the compound for weather contains it as well. A rarer archaic reading, xi, meant presenting food to guests. Some scholars, including Philip J. Ivanhoe and Bryan W. Van Norden, suggest the term may first have described mist rising from heated sacrificial offerings.
The Shuowen Jiezi, China's first character dictionary compiled in 121 CE, described the basic form as a picture of cloudy vapours. That component later served as the gas radical, which chemists used to coin characters for gaseous elements. Some borrow European sounds, as with fluorine and neon, while others encode meaning: hydrogen's character hints at lightness, and chlorine's at the colour green.
Across East Asia the same idea travels under different sounds: ki in Japanese, gi in Korean and khi in Vietnamese, with Cantonese saying hei. Japan even uses a simplified glyph of its own. English picked up the word early, spelling it k'i in the early 19th century, then ch'i under Wade-Giles, and finally qi once pinyin took over around 1950s onward. Its earliest English citation, as recorded by the OED, dates from 1850.
Source: Qi
