I wrote it myself and it belongs to "Xian!" The second volume of the series. The first volume is called "String!" "Positive Matter Universe: Beyond", the first volume is purely technological. This book is the first one in which the protagonist is sneak-attacked by high-dimensional forces and enters the dark matter universe, an extraordinary universe full of fantasy colors, launching a new battle and development. The characteristics of this book are the integration of technology and cultivation. This series of novels always insists on depicting characters, dialogues, emotions, battle scenes, various civilization philosophies, research and development and applications, etc. [Laugh]
