What are the secrets of real kung fu in ancient China, and why haven't they been handed down?

The "Military Skills" part of "The Art of War" in Hanshu introduced martial arts. 13 school, 199 articles, among which besides shooting, there are six articles of hand fighting, thirty-eight articles of kendo and four articles of Puzi Gefa. These are China's ancient martial arts works. Although they are all lost, it can be seen that as early as the Han Dynasty in China, martial arts skills such as boxing and fencing have been passed down orally.

Five Miscellaneous Notes was written by Ming Metabolism. Part of this book describes the martial arts at that time, calling Shaolin Boxing "Shaolin Boxing". Wanli is the Wei Xuan edition of this book, which is reprinted by Zhonghua Book Company.

"Market Town" was written by He in Ming Dynasty, and it is divided into four volumes. Among them, the second volume "Skill" describes the martial arts such as shooting, pressure, boxing, stick, gun, pole, card, knife, sword and short soldier. This book is included in Siku Quanshu.

The Book of Continuation was written by Wang Qi in Ming Dynasty. In the chapter "Overview of Military Weapons" of this book, various martial arts schools are described, such as guns, knives, bows, crossbows, sticks and various weapons.

The Three Events Map was written by Wang Qi in the Ming Dynasty and published in the thirty-fifth year of Wanli in the Ming Dynasty (1607). The personnel department of this book has Shooting Method Map, Horse Arrow Map, Boxing Method Map, Shooting Method Map, Stick Method Map and Border Card Potential Map, most of which are recorded from. The book "User Department" transcribes many illustrations of martial arts equipment from "Wulin Master".

The author of Yin Fu Gun Spectrum is unknown. This book tells the secrets of marksmanship, such as competition, left and right, rigidity, reality, advance and retreat, movement, yin and yang, adhesion, etc., which completely conforms to Tai Ji Chuan's theory.

The Book of Boxing was taught by a mysterious monk from Shaolin Temple in the Ming Dynasty, written by Chen Songquan and Zhang Ming, supplemented by Zhang Kongzhao in the early years of Qing Emperor Kangxi and Cao Huandou in the Qianlong period. During the Republic of China, it was renamed "Mysterious Acupoint Boxing" and published "Boxing Manual". This book is a masterpiece about Shaolin Boxing.

The author of Taiji Zhuan Jing is unknown (according to Tang Hao's textual research, it was written by Shanxi Wang Zongyue in Qing Dynasty). This book expounds the principle of Taiji Biography, also known as Taiji Biography.

The Law of Neijia Boxing was written by Huang Baijia of Zhejiang Province in the Qing Dynasty. Huang Baijia learned from Wang Zhengnan in his early years, and wrote this book seven years after Wang's death, which described the contents of "five can't", "playing", "acupuncturing", "no disease", "thirty-five exercises" and "eighteen exercises".