The body of a Dragon could no longer be described as indestructible.
It could be said that no human weapon could cause any harm to it, be it cold weapons or hot weapons. That was why the ancient Lost Empire found uranium. This destructive and terrifying energy could deter the Dragon.
When the two dragons breathed at each other, it was like Dragon's regret, but the Dragon was safe.
The two dragons collided at a speed of two to three thousand meters per second. The power of the collision was no less than the collision between two asteroids in space, but they were still safe and sound. (Most planets have a diameter of a few thousand meters.)
Therefore, in this world, other than the unknown uranium weapons, only the dragons could hurt the dragons.
The eyes were the most vulnerable part of almost all living creatures, even the dragons were no exception.