The creation of Zhao Fujiang, who combined his knowledge of Baji, Xingyiquan and Yiquan to create a new art form of his own.
Fa jin, fajin, or fa chin (fā jìn, 發勁) is a term used in some Chinese martial arts, particularly the neijia (internal) martial arts, such as Xingyiquan, T'ai chi ch'uan (Taijiquan), Baguazhang and Bak Mei but also made famous by the Sao Lim Hood Kar Pai branch practiced by the late masters Abbot Sek Kho Sum and Dato P'ng Chye Kim.