jing

The term "jing" in Chinese philosophy refers to "essence" and is considered one of the three vital "treasures" that sustain life, alongside qi (vital breath) and shen (spirit). Jing is specifically associated with reproductive energy and is one of the fundamental principles within the concept of yangsheng, which encompasses self-cultivation practices for health and longevity in Chinese medicine and Daoism.1

Both jing and qi are present at birth and diminish with age. Maintaining or restoring qi is crucial for longevity, as qi can be converted into jing, which in turn aids in the circulation of qi throughout the body. Shen, unlike jing and qi, is not innate but must be cultivated throughout life. When these three treasures become depleted or imbalanced, health declines. Practices like physical exercises, meditation, medicinal treatments, and dietary adjustments aim to enhance qi circulation, replenish these treasures, and thus nourish and extend life.1