How powerful is the legendary Chinese internal strength?

The highest state of internal strength is called "body knowledge", which means "the body itself knows the movement of qi". To put it a little more "wuxia", it is called "opening up the two channels of Ren and Du". This statement is not unreasonable. Anyone who studies traditional Chinese medicine has learned about acupuncture points, and there is also a mantra that talks about the order and time of the movement of qi and blood in the human body. Which internal organs circulate at midnight, which internal organs circulate at noon... There are exactly 12 hours in a day when the whole body circulates. This is a Zhoutian (Xiantian Great Zhoutian). This week is one that humans are born to keep running. If a person who practices internal strength controls his internal strength to move quickly in his body, and takes an hour to complete the operation that should be completed in a day, can he still be the same as a normal person? And this Zhoutian (the Zhoutian the day after tomorrow) is divided into two types, one is the Great Zhoutian and the other is the Small Zhoutian. Xiao Zhou Tian means to control the Qi and blood to only go around the two meridians of Ren and Du (the Baihui point on the top of the head and the Huiyin point on the crotch at the top. The central line in the front of the body is the Ren meridian, and the central line in the back of the body is the Du meridian), and the speed is fast. But the growth of gong is slow. Da Zhoutian refers to controlling the flow of Qi and blood around all the meridians of the body, which increases the power quickly but slowly. This level of inner strength cultivation can only be achieved by people with "body knowledge".

People who have achieved "body awareness" really give people an unfathomable feeling. There was a Tai Chi master (deceased) who was more than 1.6 meters tall. During his lifetime (he was over 80 years old at the time), he was sitting on a wicker chair. A strong man 1.9 meters tall pressed his arms with both hands and exerted all his strength. Hold him down. The old man just shouted loudly and used his internal force to push the strong man out more than 2 meters away. This is the power of "body awareness".

In addition, there is a kind of internal strength that is not meant to hit people. There is a kind of Kung Fu among the Wudang sect called "Hanshu Iron Clothes", which was created by Zhang Sanfeng. Practicing this Kung Fu can make people not afraid of cold and heat, and can travel around the world wearing only single clothes at all times. This kind of internal strength not only involves the theories mentioned above, but also refers to Taoism's unique cosmology and health theory. I won’t go into details here. But again, there are limits to internal strength. For example, I am in Changchun now, where it often snows and the weather is cold, but I still only wear a shirt and a coat, not a sweater or a down jacket. Hanshu Tiebuyi is even more cruel than me, but there is no way he can go to Antarctica for a scientific expedition wearing just a pair of shorts.