Indeed, it's not bad.
Even some millennia-old grudges have evolved into grudges lasting tens of thousands of years.
That's why there arises the approach: Let the disciples go first, one level at a time, rather than obliterating the opponent with overwhelming force. The reason is twofold: trial and training.
Without allowing disciples to undergo trials, how can they grow?
So, this is an inevitable process.
If the disciple overcomes the opponent and kills them in these trials, the gains are far greater than if the master or grandmaster personally takes action to annihilate the enemy.
It signifies that the disciple 'has conquered a true self, undergone a life-and-death tempering, consolidated the spirit, broken through mental barriers, ascended the Great Dao, and ascended the heavenly ladder.'
However, Feng Yin could not agree with this philosophy.
Even, or perhaps especially, many people in modern times would not think this way.
A threat is a threat.
