Master Chen Zhonghua Online Lesson on Oct 7, 2020 - Kelvin Ho
The following people received Yilu correction from Master Chen Zhonghua:
- Josh Landau
- Frederick Wong
- Jack Scott
- Mark Hanley
- Kevin Chen
- Sven Gusowski
- Kerstin Frotscher-Kummle
For positive circle, the hand is slightly above the shoulder, and is clearly above the elbow. The elbow and shoulder are responsible for the horizontal movement of the arm. The kua and knee are responsible for the vertical movement of the arm.
Source: https://practicalmethod.com/?p=67021