I Opened the Door to Another World, and the Whole Country of Daxia Entered

[Urban imagination + national development + all worlds + funny and relaxed + single female protagonist + later live broadcast] In the living room of Lin Hao's house, an arm that did not belong to this world fell out of thin air. It came from the portal that Lin Hao had just opened. Good news: The door is real, and there's a whole world on the other side. Bad news: The civilization there has collapsed, and the ruined city is full of zombies and unknown monsters. Faced with the ability to change the world, eighteen-year-old Lin Hao did not hide and be a lone ranger, but chose to cooperate with Daxia. The first time it was officially opened, the demarcation team entered cautiously and brought back the first batch of alien samples before the zombie wave approached. When the door opened for the second time, thousands of soldiers, tanks, drones and engineering vehicles were already lined up outside. Before the alien monsters could figure out what was happening, Daxia had already begun cleaning up the abandoned city, establishing outposts, and setting up base stations. Lin Hao originally thought that there was only this doomsday world behind the door. But as the secrets of the portal were gradually revealed, he realized that this abandoned city was just the first stop in the world. From official advance to private exploration, from construction of another world to national live broadcast. Lin Hao is responsible for opening the door, and what Daxia has to do is step into every world behind the door.