Jiaobiejin
Jiaobiejin, pronounced as cheobiejin, is a special characteristic of the Chen Style Taijiquan Practical Method system.
The original meaning of the word is awkward. It refers to the energy that causes the opponent to feel awkward. During the learning stage, it is the requirement of this energy that the routines of the Chen Style Taijiquan Practical Method make the learner feel awkward first. Through years of training in an awkward way, the practitioner gets used to being in this awkward position and he starts to look normal. But when dealing with opponents, he produces an effect on the opponent that is extremely awkward to deal with.
This is one of the basic reasons why taiji is difficult to learn, and once learned, other people find taiji people difficult to deal with.
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Source: https://practicalmethod.com/?p=42985