In other words.
In fact, when Qin Feng met Red Matt and obtained information about his language, he could already deduce the range of eras in which his Blueprint World existed.
It was just that if the other party volunteered the information, it would save Qin Feng a great deal of effort.
The time saved was secondary.
What concerned him most was that every time Qin Feng visited a new Blueprint World, he would leave traces. The more Blueprint Worlds he left traces in, the more information he might expose...
"Under the circumstances, I can only check how many Blueprint Worlds match this Demon Civilization's spoken and written language first."
Qin Feng was still relatively optimistic about this.
After all, the transmission of spoken and written language had a great deal to do with time. Even for a race as ancient as the Demon Civilization, its spoken and written language would undoubtedly be constantly developing.
Each Blueprint World was separated from the next by twenty thousand years.
Over twenty thousand years, there would surely be some changes in the language passed down, right?
Soon.
Red Matt, whose entire body had been crippled, had already entered the highest-difficulty Gate of Fate, ready to take on the challenge.
Generally speaking, this challenge took a month or two to complete.
But it was also possible to perform poorly and die early during the challenge...
That would count as failing the challenge, and the time required would be uncertain.
In any case, Qin Feng could not possibly sit here waiting.
Once Red Matt began his challenge, Qin Feng's consciousness returned to his original body in the Blue Star Civilization.
Through the omniscient high minor authority, Qin Feng quickly deduced the result!
"The Blueprint World Red Matt comes from must be in the Prosperity Era!"