How many editions are they available for this Chen taiji classic, Illustrated Canon of Chen Family Taijiquan 陈氏太极拳图说 by Chen Xin (陈鑫) Quite a lot apparently.  Here are 5. I think the best quality is the one that has 4 volumes (the dark blue cover set ).
The Illustrated Canon of Chen Family Taijiquan was written by Chen Xin from 1908. In 1919, the manuscript was sent off to Nanjing to try to get it published. That did not work out and the manuscript was lost.  in 1929, at his deathbed, …

As part of the strengthening exercise, the taiji ruler is used to develop wrists power.
How do you obtain a taiji ruler?
There really isn’t a need to buy any special equipment. For me, i just used a chinese rolling pin that is about a feet long. Others simply saw a section off an unused curtain rod.
Here are 2 simple steps on how to do the taiji ruler exercise. You may think of more.
1. Hold the ruler so that it is in a vertical position while your arms are like embracing a …