≡Imperial Renaissance Fighting Systems/IRFS≡ is a training system of ancient martial science and philosophy, geared for the modern man. The knowledge and training methods are extracted from the Beijing Imperial Renaissance arts of Yin Style Baguazhang, Cheng Baguazhang, and Gongfu Jia Chen Tai Chi Chuan. The history of traditional Yin and Cheng Style Baguazhang has roots in the Imperial Court during the mid-1800’s in the Forbidden City, where Dong Haichuan served as Imperial Martial Art Instructor and Bodyguard for Imperial Prince Su. Dong Haichuan synthesized Baguazhang, a sophisticated combative art, adapted to each individual by his own experience while retaining the essential principals and structure. The Senior Disciple of Dong Haichuan, Yin Fu, adapted principals of the art to his own martial background, developing Yin Style Baguazhang. The Yin style of Baguazhang popularized the Ox Tongue Palm, with emphasis on Hard Palm training which is characterized by the Orthodox Penetrating Palms, and later evolving into Eight Animal Systems. The complete eight animal systems contain martial variants of Dragon Shape (weaving) Baguazhang, which is the iconic fighting structures most widely used in mainstream Baguazhang styles of the modern world. The Yin Style of Bagua is an integrated part of modern martial arts branching from “The Fairbairn Method” of William E. Fairbairn. (The Fairbairn System provides historically and modernly, the foundation for Close Combat methods of the OSS and Federal Law Enforcement, British Commandos, and Special Units.) Yin Style Bagua is externally more direct, brutal, crisp with more Shaolin and Xing Yi influence – yet contains a balance of smooth power contained internally. The system contains many concealment weapons as well as oversized broadswords and deer horn knives. Yin Fu established an elite Bodyguard Company and became the personal bodyguard of Emperor Guang Xu and the Empress Dowager. Later his disciple, Cui Zhendong /Retainers of the Imperial Court, instructed William Fairbairn. Fairbairn made dedication in his book All In Fighting (1942) to Cui calling him a man of “terrifying prowess.” Cheng Ting Hua is the other top student and disciple of Dong Haichuan. The Cheng style of Baguazhang popularized the Dragon Claw Palm, characterized by fluid swimming (weaving) body (serpent/dragon like) movements with complex coiling and spiraling. The style is more dynamic and smooth externally, with more intricate footwork patterns and neutralization methods. The system contains historical edged weapons ranging from Sword to Crescent knives and double daggers. Cheng Tinghua was very much the People’s Champion. Cheng was a high level and open martial artist who believed in evolving martial art techniques and theories, sharing knowledge with martial artists of different branches.