Yin

The Yin and the Yang are complementary rather than opposite forces.

The yin is dark, while the yang bright.

The yin is feminine and the yang is masculine.

The opposites yin and yang pursue each other through time.

"Steamed fish and chicken and vegetable soup and even mushrooms are considered cooling foods, edible materializations of the yang, the pure primal air. The yin, or earth element, inheres in fried dishes and especially in shark's fin soup. Am I right, Mr Lee?"

According to traditional Chinese medicine, blood carries chi, your “life force,” which fuels all the functions of the body. When you lose blood, you lose chi, and this causes your body to go into a state of yin (cold). When yin (cold) and yang (hot) are out of balance, your body will suffer physical disorders.

In ancient Chinese philosophy, the opposing forces of Yin (passive, feminine, night) and Yang (active, masculine, sun) balance life.[…] As we turn towards darker days (from November 1st until the winter solstice's darkest night on December 21st), we have a chance to turn inward for reflection. We enter a Yin phase.