On the day it wrote this letter, it actually felt sleepy, and then fell asleep.
In the dream, it seemed to see a mass of black light, and that light imparted a lot of knowledge to it.
The knowledge included how to condense the mark of the Mechanical Race, how to cultivate the Power of Pain, how to forge the Hell Furnace, how to repair the Radiant Mecha...
After waking up, the "King" was invigorated and immediately began to experiment with the knowledge gained from the dream...
...
After reading through this information, Su Yu fell into deep thought.
He didn't expect the "King's" experience to be so peculiar.
It wrote a letter to the future, and then something from the future responded to it, giving it knowledge and power.
That's why there was that "King" who fought fiercely with Su Yu earlier.
Even the repair of the Radiant Mecha was knowledge imparted to it by that thing from the future.
