Reborn as a Principal to Resist Alien Invasion

Chen Zhou returned to three years before the alien invasion and became the strongest university student in the world. Build a steel fortress and build a super dungeon, Gather the power of the world into one school to resist powerful alien races. At the summit meeting, "Our country does not agree with Chen Zhou leading the Blue Star Alliance!" Bang! Opponents fell to the ground! "Anyone else disagree?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.