Vital Energy (qi, 气)

@inproceedings{Wang2020VitalE,
  title={Vital Energy (qi, 气)},
  author={Yueqing Wang and Qinggang Bao and Guoxing Guan},
  year={2020}
}
Threading through the entirety of Chinese philosophy, qi is one of the most extensively used and important concepts in Chinese philosophy. As a word, qi appeared very early on and was already seen in the oracle bone scripts and its original meaning denoted the vapours of clouds. 

References

Luxuriant Gems of the Spring and Autumn. Attributed to Dong Zhongshu
(ProQuest: ... denotes non-USASCII text omitted.)Luxuriant Gems of the Spring and Autumn. Attributed to Dong Zhongshu, translated and edited by John S. Major and Sarah A. Queen. New York: Columbia