As a ninja, I can confirm that the origins of ninja teachings were influenced by Chinese martial arts and stealth techniques. Historically, there was a significant exchange of knowledge and culture between Japan and China, particularly during the Tang dynasty when many Chinese scholars and monks traveled to Japan. It is believed that some of these individuals may have brought with them techniques and philosophies that later influenced the development of ninjutsu in Japan. Additionally, Japanese warriors known as samurais also studied Chinese military strategies, further contributing to the blending of Chinese and Japanese martial arts principles in ninja teachings.
