I have practiced Qigong since I was a child, and I have experienced the level of cultivation. The real practice of Qigong should start with "Qi". That is to say, practitioners should feel that some meridians or abdomen of the body have fever, numbness and other feelings. When kung fu reaches a certain level, there will be a gas gathering in the abdomen and a "small Sunday". "Xiao Zhou Tian" is the first level of qigong practice, and the ancients also called it "refining Qi". At this point in kung fu, every time the practitioners practice quietly, they can generally feel that the lower abdomen is hot and heavy, and then there are two veins of qi flowing along the governor and ren. If you continue to practice, there will be a "big week" of qi communication. When qi passes through the "big Sunday", the reaction is relatively large, and there are so-called "six vibrations". After that, every time you practice quietly, you can feel the qi running automatically all over your body, and the degree of quietness is deeper than before. The middle and lower abdomen are integrated into one, and the "Yuan God" begins to appear, which is what the ancients called "refining and gasifying God". Practitioners will feel that this gas field, which can't be bigger, is slowly receding from the horizon, and the world seems to be getting smaller and smaller (feeling). At the same time, they will realize that they and all the people, things and things around them (including up and down) are melting in this gas field, and kung fu is now a relatively deep "harmony" and "visibility". The above is my experience of practicing kungfu for many years. Due to the limitation of space, I will only make a brief introduction.
There are more than 1, Qigong books. You can choose to look at some of them for beginners.
Look at the lower right corner of the screenshot of two Qigong books in the answer. There are many Qigong books, all of which come from there.
I recommend that you read these qigong books:
[ China qigong history]. Li Zhiyong. Scanned edition
[ China qigong thinking]. Ye Tiaoxin. Scanned edition
[ China qigong martial arts exploration]. Zheng Guanglu. Scanned edition
[ China qigong introduction]. Zhao Baofeng. Scanned edition
. . (Ming) Wu Chongxu. Scanned version
[ Wu Liu is authentic]. Wu Yijiang. Scanned version
[ A study of Wu Shouyang's inner alchemy thought]. Ding Changchun. Scanned version
[ Wudang Health Care Qigong]. Sun Haiyun. Scanned version
[ Wudang Nongwan Fitness General Map]. Ancient Capital Zicang. Scanned version. . Lu Guozhu. Scanned edition
[ China Qigong Consulting Complete Book]. Li Chengyin. Scanned edition
[ China Qingjie Buqi Qigong]. Xu Xinjun. Scanned edition
[ China's excellent internal skill]. Zhi Chao. Scanned edition
[ China's ancient culture and the origin of Qigong]. Zhang Fangsong. Scanned edition
[ China Shaolin Zen Secret Skill] . Zeng Guanghua. Scanned version
[ Secret Method of Great Qigong Master]. Zhi Chao. Scanned version
[ Qigong Fitness]. Liu Xiaomei. Scanned version
[ Qigong Fitness Method]. Hu Yaozhen. Scanned version
[ Qigong Fitness Guide]. Shen Fudao. Scanned version
[ Qigong Course]. Fu . Wu En Pu. Scanned version
[ The Exquisite and Short Techniques of Qigong]. Ning Aiming. Scanned version
[ Five Birds Qigong]. Anonymous. Scanned version
[ Five Birds Map]. Xiang Yanghui. Scanned version
[ Five Birds Play]. Hu Yaozhen. Scanned version
[ . Lu Guozhu. Scanned version
[ Wudang Xiuzhen Secret]. Guan Hengjiu. Scanned version
[ Wulin Secret Biography]. Chen Weijian. Scanned version
[ hua tuo wuqinxi of Wulin Qigong]. Unknown. Scanned version
[ Selected Wushu Fitness Techniques]. . Yan Hai. Scanned edition
[ continuation of Qigong Selected Works]. Yan Hai. Scanned edition
[ Qigong Sit-in Talk]. Chen Zeren. Scanned edition
[ Qigong Rectification Encyclopedia]. Anbang. Scanned edition
[ Qigong Rehabilitation Essentials]. Zhou Renfeng. Scanned edition
[ Qigong] . Jiang Weiqiao. Scanned edition
[ 1 questions about Qigong therapy]. Zhao Baofeng. Scanned edition
[ Qigong therapy and health care]. Qin Zhongsan. Scanned edition
[ Qigong therapy highlights]. Tao Bingfu. Scanned edition
[ Qigong therapy lecture notes]. Unknown. Scanned edition
[ . Wu Chongguang. Scanned edition
[ Qigong Rehabilitation Compilation]. Mi Borang. Scanned edition
[ Qigong Lingyuan Fawei]. Li Zhongyu. Scanned edition
[ Qigong Flowing Direction]. Late establishment. Scanned edition
[ Qigong Proverbs Manual]. Zhang Qing. Scanned edition
[ Qigong for 1 minutes]. . Jiao Guorui. Scanned version
[ the essence of Qigong health]. Wang Yingzhi. Scanned version
[ Qigong health for five thousand years]. Ma Mengchang. Scanned version
[ Qigong health and practitioners' diet]. Yang Zhiru. Scanned version
[ Qigong health]. Du Mingtong. Scanned version
[ . Kong Guojian. Scanned version
[ Records of Qigong Medical Experience]. Li Zhiru. Scanned version
[ Revealing Qigong Medical Knowledge]. Lu Jinchuan. Scanned version
[ Theory of Meridian and Tendon of Qigong Medicine]. Lv Jiage. Scanned version
[ Qi Gong Yin Yang Jie]. Ji Yi. Scanned version
[ Qigong and Eight Diagrams] Shao Kangli. Scanned version
[ Qigong and disease prevention]. Wang Qizhang. Scanned version
[ Qigong and deception]. Liu Zheng. Scanned version
[ Qigong and hand diagnosis]. Zhang Yansheng. Scanned version
[ Qigong beauty method]. Wu Zhenzhen. Scanned version
[ Qigong meditation health method]. . Kuang Ankun. Scanned version
[ Qigong strengthens the body and cures all diseases]. Mai Rusong. Scanned version
[ Hot aspects of Qigong]. Wang Weidong. Scanned version
[ The door of Qigong]. Liu Tianjun. Scanned version
[ Introduction to Qigong]. Liutong Zhang. Scanned version
[ . Li Zhaosheng. Scanned edition
[ Sixteen Lectures on Qigong]. Qu Zuyi. Scanned edition
[ Qigong makes people healthy]. Lin Housheng. Scanned edition
[ Qigong calligraphy and health preservation]. Lin Shaoming. Scanned edition
[ Qigong exploration]. Pang Ming. Scanned edition
[ Qigong exploration]. . Zhang Zhigao. Scanned version
[ Exploration of Qigong External Qi]. Yan Zhenyuan. Scanned version
[ Qigong Efficiency Manual]. Geng Wu. Scanned version
[ Qigong Mind Method]. Kong Xiande. Scanned version
[ Mystery of Qigong Mind]. Wang Mi Canal. Scanned version
[ New Thirteen Types of Qigong].