When evidence is insufficient, firepower makes up for it!
Within range, truth is everywhere!
For example, if you want to reason with a Golden Core cultivator, you can bring a hydrogen bomb with a yield of 200 billion tons.
If your opponent is a major sect, I suggest you buy a meteor that has already been accelerated to 60 kilometers per second, with a diameter of 10 kilometers, and aim it at their sect; they will definitely want to talk things out calmly.
Hmm?
If the enemy has occupied an entire world and is domineering and rude?
A primordial black hole would be very suitable.