"As living proof of passing on a legacy, when Will Bayley returned from the Tokyo Paralympics with a silver medal around his neck, Bly Twomey played a match against him in Brighton and her future path was set. Now 14, Twomey heads to the Paris Paralympics ranked fourth in the world, hoping to upset players twice her age."
Index finger is the primary finger for rpb... I found this to be very important. Also another thing I think is different with rpb and shakehand backhand is the elbow position. Usually rpb is lower. Compare Felix Lebrun and Jun Mizutani for example
Also, Fang Bo said that Wang Hao has the heaviest loop ever (heavier than Wang Liqin, Ma Long, Ma Lin etc.)
This video focus on some details to enhance your forehand, including concentrating the force on your fingers, how to relax your body, and minimize the movement in your forehand swing.