Earth's Hidden Code: Summer

[Xia Chao Technology + Alien Invasion] You may not believe that the Xia Dynasty fell because of its resistance to aliens. You may not believe it even more, but Xia Chaowen's fate continues to this day. The protagonist didn't believe it at first, until he suddenly learned about his life experience. What kind of life experience makes him more stressed! What kind of opportunity allows him to find himself! If alien creatures attack again, how will the earth resist? This book will solve the puzzles one by one!