Di san ci zheng jiu wei lai shi jie

"A soap bubble has saved a desert city that is about to disappear due to drought! A horror technology that led to the underground devil, but can solve the huge energy crisis of mankind in a hundred years! A person who received a call from the future changed the history of the future three times, but returned the future three times! This book will combine the thinking of reality with the imagination of the future to explore another possibility for humans to solve development problems.".