Insufficient evidence? Let's use firepower! Within range, truth prevails! For example, if you need to reason with a Golden Core cultivator, you can bring a 200-billion-ton-equivalent hydrogen bomb. If your opponent is a large sect, I suggest you buy a meteorite that has been accelerated to 60 kilometers per second, with a diameter of 10 kilometers, and aim it at their sect; they will definitely want you to talk things out slowly. What if the enemy occupies an entire world and is domineering and unreasonable? This primordial black hole is perfect.