Turn in the System at the Beginning and Lead the Country to Dominate the World

[Double-travel system + start + hand over country + no-brainer fun + rise of great powers + strongest backend + development of two worlds] Liu Yuhang is a social worker who firmly believes that "working only to get off work". Until he was bound to a [Doomsday Shuttle System] - forcibly throwing him to the doomsday world 100 years later. Looking at those future technologies worth trillions, Liu Yuhang trembled - ordinary people are not guilty, but they are guilty of carrying a treasure! He went to Guo Guo overnight: "Thigh! I don't dare to ask for this thing, I'll give it all to you!" So, Daxia Technology turned on the furious mode! Energy crisis? Controlled nuclear fusion is done! Terminal illness problem? Enough special medicine! Interstellar era? Build the spaceship! When the beautiful country is left behind and eats dust, when the whole world calls Daxia dad! Liu Yuhang, lost in thought: "How could we keep growing as promised? How could we accidentally send our motherland to the top of the universe?"