Chen's 18 formula generally refers to the short routine created according to Chen's old routine. It has the characteristics of Chen-style Tai Ji Chuan, with flexibility, flexibility and rounded crotch. It is suitable for beginners who like Chen-style Tai Ji Chuan.
As long as Wang Zongyue's On Tai Ji Chuan is taken as the basis, Tai Ji Chuan is a family. It's just that the methods of getting started are different and the goal is the same.