The Apocalypse Arrives, and I, as the Nation's Envoy, Visit a Thousand Worlds

Ten suns rise, and the apocalypse begins! All animals and plants will go extinct! Humanity's food reserves can last at most ten years. Just after Su Chen sets foot beyond the borders, he activates the Myriad Worlds Diplomatic System. With every mission he completes, one sun vanishes from the sky above the Jiuzhou Continent. He transmigrates to a historical world and turns the Great Qin into Jiuzhou's production, technology, and living-support base. He transmigrates to the Journey to the West world, where the Queen of the Women's Kingdom wants a marriage alliance? Meeting her demands is only fair, right? He transmigrates to a sci-fi world, where aliens want to be friends? He'll borrow a few interstellar battleships. That's just a fair exchange! And so Su Chen keeps transmigrating through the outer worlds... the Divine Realm, the Immortal Realm, the Underworld... Ten years later, the real apocalypse arrives. Only the Jiuzhou Continent stands tall, untouched by all magic! I want to join the Jiuzhou Nation! Not just anyone can join the Jiuzhou Nation! Jiuzhou citizenship becomes the only protection...