Tai Chi Peng Lu Ji An 陈氏太极拳 四正手
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http://tccii.com Tai Chi Chuan Peng, Lu, Ji, An by Chen Xili, 20th Generation, Son of Grandmaster Chen Quanzhong in Xian, China. Peng, Lu, Ji and An are the four major directions in Taijiquan. They are often translated as Push, Rollback, Wardoff and Press, but this translation obscures their original meaning. 陈氏太极拳, 陈全忠. 四正手