Chin na or Qinna (擒拿) is the set of joint lock techniques used in the Chinese martial arts to control or lock an opponent's joints or muscles/tendons so he cannot move, thus neutralizing the opponent's fighting ability. Chin na su (Chinese: 術; pinyin: shù meaning technique) literally translates as technique of catching and locking in Chinese.

chin na Is the evolution from martial arts , which is characterized not only by a variety of weapons, unarmed combat techniques, the use of human joints, chakras and the vital parts of weakness, so that the other body parts have pain and fight. In the martial arts. The use of human joints, acupoints and key parts of weakness, using the lever principle and meridian theory, reverse joint action and focus on attacking each other weaknesses, which produces the physiological irresistible pain reaction, to take the place of the capture effect And can be divided into with bone, [that] take anti joint, reinforcement, with three points, which took the bones as its core technology, its making joint as a means to tackle opponents as a goal, not to harm the opponent and was captured for superb skills, fully embodies the Chinese martial arts "a clever play the characteristics of" just, soft G.

Chin na studies go from simple to complex. As learning of the basic kung fu techniques progresses, they are supplemented with structurally appropriate elements of chin na that, in its turn, offers a more profound perception of the principles. Without question, chin na teaches not only how to harm a body, but also how to strengthen it. Special exercises that are included in the training process along with the actual chin na techniques are highly effective for firming of tendons and ligaments and, at the same time, increase their contraction speed and elasticity. Besides, counter techniques against painful grappling, the so called fang chin na, enhance the body’s sensitivity to the opponent’s efforts and give your brain a good workout, too.

These kinds of skills are useful for all martial artists. The advantages to learning Chin Na are many.

First, the movements of Chin Na require skill but not brute strength. Skill can always be developed through practice. Strength is something that is helpful but not required. These Grappling techniques are used to subdue the enemy with skillful movements and ingenious exertion of power. The basic idea of Chin Na is to capture and seize the enemy’s limbs giving the practitioner total control over of the opponents body. Chin Na uses the principles of leverage and body alignment to overcome a physically stronger opponent. Chin Na techniques also involve the study and use of pressure points to enhance the efficiency of the leverage techniques applied by the practitioner.

Second, Chin Na allows for the option of controlling and disabling opponents without causing serious harm. It is a compassionate martial art. Because of its origin in Buddhism, it allows the possibility of defeating an attacker without seriously harming him or her.

Third, it provides real-life, usable, legal self-defense.

Chin-na (“seize and break”; Cantonese: kahm nah) isn’t an individual style of Chinese martial arts. It’s a collection of kung fu techniques from many different martial arts that have developed over the centuries, and these skills can be applied while either standing or on the ground. A kung fu practitioner uses these techniques to grab and manipulate an opponent’s leg or arm in order to painfully control and lock his joints/muscles/tendons, rendering him incapacitated and unable to move. Chin-na teaches you about leverage, application of force, spatial orientation between you and an attacker, and how to read an opponent’s intentions and body weaknesses.