Hard qigong: Long-term beating causes calcification, thickening and hardening of local tissues, nerve necrosis and no pain.

Hard qigong is a foreign skill, which is characterized by one year's success, two years' disability, strong external skills and premature aging.

Slap: It will cause subcutaneous congestion, which is toxic for a long time. The impact of flapping will persecute the heart, which is not conducive to longevity.

Internal strength: rosy complexion, soft as cotton, hard as iron, infinite strength, enhancing immunity and prolonging life.

Hard qigong, external force, are not strong.

The ubiquitous internal strength is the most powerful.