The name, nature, and teachings of this Chen subdivision has been fraught with confusion for nearly a century. Describing the ancestry of his art from Chen Wangting to himself, Chen Ziming referred to practice changes in the Chen Village that separated the art into "old frame" (laojia) and "new frame" (xinjia). He said his book presented the new frame of Chen taijiquan. This was the first published reference dividing Chen Taijiquan into frames, and contemporary books, even one by his teacher, Chen Xin, did not mention frames. Although the art pragmatically tended to be taught among close relatives, there was little or no formal distinction between lineages or branches of teaching methods within the Chen Village, rather Chen Ziming's descriptions match the historical condensation of Chen Wangting's seven-form curriculum into the two-form teaching method begun in the prior century. Tang Hao reaffirmed at some length in the postscript of the same book that by "old frame" Chen was referring to the original teachings of Chen Wangting.