What is Japanese Ninjutsu?

Sorry, I copied it. I hope it will be useful to you. Ninjutsu, also known as invisibility, is a secret pearl in ancient Japanese martial arts. Ninjutsu, like Japanese martial arts such as karate, judo and kendo, originally originated in China. Ninjutsu originated from Sun Tzu's Art of War and is an ambush tactic. After the evolution and perfection of the Northern and Southern Dynasties, it became what it is today. The ninja family has been kept secret for generations, but it is difficult for the outside world to know its details. Ninjutsu is a technique used for espionage in Japan. Ninjutsu includes fighting, creating chaos and gathering intelligence. The training of Ninjutsu includes camouflage, escape, hiding, fighting, geography, medicine and blasting. Ninjutsu is influenced by China Wushu and Sun Tzu's Art of War, and its birthplace is Iga area. According to the investigation, a monk from China once went there and asked the local samurai if they were willing to learn a martial art that integrated body and mind, which became the origin of Ninjutsu. Ninjutsu is different from Shinto in Japan and is generally used for military purposes. [Edit this paragraph] Ninjutsu can be divided into five different skills according to genre: in the conversation with opponents, the skill of car-loving-the skill of inciting and confusing opponents to find opportunities to get angry with cars-the skill of irritating opponents, making them lose their composure and mourning cars-the skill of car-appreciating-makes opponents jealous of themselves and lose their fighting spirit, thus pulling them into their own side. Fear of cars-fear opponents by superstition and other means, thus losing their fighting spirit. Follow the shooting technique, use smoke bombs and other things to temporarily confuse the enemy, and then run away. The technology of water circulation lurks underwater through special skills or props. Chasing wood skillfully uses lightness skill, climbing and other kung fu to escape between trees and jungle. Golden rule: throw some valuables and run away. If the enemy can compete for the valuables they throw away at the same time, it can be said that it is a success. Chasing the soil is to dig a tunnel in advance and prepare to escape. The wind chasing technique scatters some poisonous powder, and the wind blows the poisonous powder to the enemy, causing the enemy to be poisoned and faint. Lei Xun's Art of Insects and Beasts, Art of Celestial Salivation, Art of Lion's Body, and Art of Eight Doors of Ninja (a compulsory skill of Ninja, regardless of genre) The theoretical basis of Ninja's skills of bone, qi, sword, stick, fire, gun, entertainment and teaching, the origin of Ninja's skills came from China, and then developed with the practice and ambush skills in the mountains. In peacetime, due to the rise of the samurai class, the art of ambush in the mountains developed from samurai. In Yuan Ping's era, he learned Yuan Yijing's ambush in the mountains, successfully applied the ambush skills in the mountains, and completed the theory of attack tactics. During the Southern and Northern Dynasties, Kusunoki Masashige developed defensive techniques. At the same time, Ninjutsu and Wushu are separated into different systems. With the progress of science and technology, Ninjutsu gradually lost. According to legend, the ancestor of Ninjutsu is Sun Tzu's art of war, which needs to be verified by historians. During the Warring States period, celebrities needed a lot of information about the enemy's situation to sabotage enemy cities, so Ninjutsu developed by leaps and bounds in this era. Ninjutsu has developed in the following areas: Musashi, Jiafei, Houyue, Shinano, Iga, Kaga and Jiyi. Among them, Ninjutsu of Iga and Kaga is the most developed in Japan. Iga and Kaga are both close to Beijing, and the terrain belongs to a small closed basin surrounded by mountains and obstacles. Although barren, their strategic position is very important: because they are close to central Feng Jingen. During the Warring States Period, more than 60 local tyrants (each with a maximum strength of no more than 50 people, according to China's algorithm, at best, small bandits) rose in this tiny place. Although the venue is small, the fierce competition here is beyond the imagination of outsiders. Local tyrants form false alliances with each other, secretly spy on each other, and once they seize the opportunity, they will give their opponents a merciless blow. These two bloody mountains full of cruelty and cunning have gradually evolved into the base camp for the development of Ninjutsu. Iga and Kaga's greatest contribution to the cause of ninja is to systematize the theoretical basis and skills of ninja and compile a book on ninja cultivation-Wan Ji Chuan Sea. Although the genre is different, the classic of ninjas' cultivation is Wan Ji Chuan Sea, the content of which is to teach ninjas all the theoretical basis and skill guidance on how to cultivate ninjas. The fourth generation general of Tokugawa family, Tokugawa Yasuo Okahiko (1676), for four years, Fujimori Yasuo, a Japanese hermit, combined the thoughts and martial arts essence of famous Chinese and Japanese celebrities and referred to six towers and six towers. Referring to the thought of "a hundred schools of thought contend and return to the sea" in the selected works of Zuo Du Fu, an ancient Chinese book, the book was named Wan Hai. As the title of the book shows, "Wan Ji Chuan Sea" means all rivers run into the sea, taking the essence of each family. Wan Ji Chuan Sea consists of six parts: righteousness, common sense, yin forbearance, yang forbearance, meteorology and forbearance. This book later became a must-read textbook for ninja practice. Tamia Liu and Sun Tzu's Art of War are two ancient works that have far-reaching influence on the overall development of Wan Ji Chuan Sea and Ninjutsu. It can also be seen that China's thoughts on ancient military martial arts have laid a solid theoretical foundation for the future development of Japanese Ninjutsu, which is the proof that Ninjutsu really originated in China. It can be said that "Wan Ji Chuan Sea" is a summary of Japanese learning the essence of ancient China's military and practicing metaphysics. During the Warring States period, Ninjutsu began to develop greatly, because Ninjutsu, martial arts and the art of war were urgently needed in this era. But unlike the art of war and martial arts, Ninjutsu has its own uniqueness. There are the following areas where Ninjutsu is developed. The schools of Ninjutsu are named after the following places: Musashi, Garfield, Moon and Nong Xin. There are 49 schools of Ninjutsu in Japan, among which Kaga and Iga are the most famous. In ancient times, various schools competed for different monarchs in various regions. Of course, what they did has always been a secret.