Xing Yi Quan, the first internal martial art incorporated into the An family’s Wushu, is renowned for its direct, powerful movements and its emphasis on harmonizing mind and body. The An family learned the Shen Xian style of Xing Yi Quan from Master Liu Yun Ji, a disciple of Li Cun Yi, who was a student of Liu Qi Lan—himself a direct successor of the style’s founder, Li Ruo Neng. Initially known as "Xin Yi Quan" ("Heart-Mind Fist"), this art focuses on developing unity of intention (Yi) and energy (Qi) through foundational practices.