These 24 solar terms each suggest the position of the sun every time it travels 15 degrees on the ecliptic longitude. A cycle is that earth revolves around the sun for one time. It begins from the Beginning of Spring (Li Chun) and ends at Greater Cold (Da Han). In each month there are often two solar terms; the first one is generally named 'Jie Qi' and the other one 'Zhong Qi'.
Positive and negative forces act together in order to create energy- in electricity. Yin and Yang represent these two forces which are in constant movement, each attempting to gain dominance. Where one achieves dominance, an imbalance occurs. Tai Chi is a combination of Yin and Yang - Yin Yang balance, also known as "middle", "neutral", and "moderate".
CHI
In the philosophies of the East, Chi is the life forces of all animate things, the quality of environments, the power of the sun, the moon and weather systems, and the driving force in human beings. In China, the movements in Tai Chi encourage Chi to move through the body. The benefits of practicing Tai Chi in which Chi flows smoothly to achieve physical and mental health, and accelerate the synthesis and absorption of energy in the body.