Prequel to the God-Defying Lord-Xuanyuan

What happened in ancient times? Why did the Yellow Emperor turn into a dragon and go away? What has the earth experienced? The same history, different universes, or the same universe, blurred boundaries. Unravel the question of whether humans existed in prehistory. Are humans really the only ones in the vast universe? This book is a copy of the previous book. There was something wrong with the listing and it was not included in the library, so I apologize. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.