If Russell were to make a comparison...
the process of being "forged" by Zhong Xiang was like experiencing a gua sha on the realm of consciousness, but intensified countless times over?
Russell was repeatedly immersed in the River of Fury, where the impurities in his thoughts... those impure elements were gradually dissolved in fury.
It was as if grease was being dissolved by an organic solvent.
The "fury" in the River of Fury, containing an entire world, could easily dissolve all the restlessness, unease, timidity, and sorrow in Russell's heart, assimilating them.
Turning all impurities that could evolve into anger, fully catalyzing them into "anger".
Then, he was pulled out for his entire body to be forged with the Painful Hammer.
Every strike was like enduring, in that instant, all the pain brought about by a session of harsh penance and interrogation.
Both mentally and physically.
With each hammer blow, he underwent a metaphorical penance in his mind.