If ultra-ancient civilization exists, human history will certainly develop rapidly. Maybe technology has been ahead, now thousands or even tens of thousands of years. If ultra-ancient civilization exists, human history will certainly develop rapidly. Maybe technology has been ahead, now thousands or even tens of thousands of years. If ultra-ancient civilization exists, human history will certainly develop rapidly. Maybe technology has been ahead, now thousands or even tens of thousands of years. If ultra-ancient civilization exists, human history will certainly develop rapidly. Maybe technology has been ahead, now thousands or even tens of thousands of years. If ultra-ancient civilization exists, human history will certainly develop rapidly. Maybe technology has been ahead, now thousands or even tens of thousands of years.