According to legend, Yijinjing was created by Dharma, the early ancestor of Shaolin Zen. The word "Yi" in Yijinjing means harmony and joy. According to China Qigong, this kind of harmony and joy can reconcile Yin and Yang and regulate the balance of qi and blood, and another meaning is transformation, change and transformation. The meaning of "tendon" refers to skin, muscle, fascia, tendon, joint capsule and other tissues, and "meridian" refers to meridian method. Many contents in Yijinjing have the meaning of harmonizing yin and yang of human body and achieving health through meridian exercise.
Although "Jiuyang Zhen Jing" has only internal skills, it is beyond the reach of any martial arts in the world. Another part is "Jiuyang Zhen Jing". When the Yin qi reaches its peak, it will gradually decline, and the youngest son will be born in secret. Yin will gradually decline, Yang will gradually flourish, and Yin and Yang will complement each other and help each other. The young will be born in Laoyin and the young will be born in Lao Yang.
Nothing should be extreme, but extreme changes, from heavy to light, from light to heavy. These contents also involve the complementary balance of yin and yang, which is very consistent with the concept of complementary Chinese medicine.
In fact, including Tai Ji Chuan, there are many descriptions of the combination of motion and static, which also cater to the theory of traditional Chinese medicine. It can be seen that there are many mysteries of Chinese medicine hidden in Wushu.