Space-Time Library: I Will Save All Heavens and Worlds

Jiang Xu, a lonely soul outside the torrent of time - he can't remember himself yesterday, has no trace in today's world, and can't see his way back tomorrow. An unexpected fall in consciousness led him into a vast sea of ​​books suspended in chaos. This is the Space-Time Library. This library has no solid walls, and billions of shimmering books are suspended like stars. The breaths of different worlds flow through the pages of the books: some book covers are burning with the flames of dragons and magic, some reflect the neon of the cyber city, some are filled with the mist and rain of the ancient martial arts, and there are even books that seal the doomsday scene that is on the verge of collapse. And every book is a real and running world of heaven and earth, from the low-level mortal world to the high-dimensional realm of gods and demons, from science fiction to interstellar fantasy to fantasy cultivation. Infinite possibilities are displayed here. Here, Jiang Xu met the system who called himself "Xiaoyun". She is not a cold program, but more like a guide in the library. She can analyze the world rules of each book, and can also sense the pages that are "decaying" - that is, the world is on the verge of destruction. In order to find the meaning of his existence, and to prevent the demise of countless worlds, Jiang Xu formed a contract with Xiaoyun, and as a "candidate for the museum master", holding a "book of the world", he started a journey through the heavens...