In traditional Chinese culture, qi or chi is an active principle forming part of any living thing. Qi literally translates as "breath", "air", or "gas", and figuratively as "material energy", "life force", or "energy flow". Qi is the central underlying principle in traditional Chinese medicine and martial arts.
A lucid dream is a dream during which the dreamer is aware of dreaming. During lucid dreaming, the dreamer may be able to exert some degree of control over the dream characters, narrative, and environment.