Our understanding of the role of internal strength is to enhance martial arts, increase lethality, and even gain some incredible abilities, such as lightness skills, such as beating cattle across mountains. And the emergence of martial arts is certainly not limited to these short decades. What's more, the theory of internal strength appeared as early as the Qing Dynasty. Wang Nanxi, a native of Langya in the Qing Dynasty, collated and annotated the Four Classics of Internal Work, which was spread all over the world. Since the publication of Southern Opera disciple Zong, it has little influence for hundreds of years and is little known. Later, this book flowed into the door of Xingyi, which made the name of Xingyi in Song Dynasty shake the Wulin. Only then did the book become famous for boxing and people, and the four internal classics really became the "internal bible".

Most martial arts are unknown, or because of the lost cultivation methods, internal skills have become a very mysterious thing, and people can only understand and imagine it through novels and film and television dramas, so the brain has supplemented various magical powers and magical martial arts.

In short, internal strength is by no means as magical as in novels, movies and TV series, and there is no internal force in the world that can make people vomit blood and be seriously injured by light pressing. But many martial arts training methods are real, and these unique methods of exercising bones and muscles and transporting energy are what we call internal strength.