Alien Beasts Come to Siege the City

A hundred years ago, strange beasts appeared and slaughtered the world, and all living things were almost extinct. The remaining humans built towering walls to protect themselves, and finally found a corner of stability. However, the area within the city is small, arable land is scarce, and food and grass are difficult to sustain the livelihood of all living beings. King Quan then dispatched many teams of people to rush outside the city: the planting team to expand the soil and cultivate the fields, and the collection team to search for supplies, and use the proceeds to provide for the people in the city. Young Zhang Xiaobei is tired of the dull and routine life inside the wall, and yearns for the world outside the wall, determined to break through the barriers to explore the truth. Until the truth is suddenly revealed: the towering city wall has never been a refuge for humans, but a huge cage that imprisons ethnic groups and raises flesh and blood. The stability of the world is all a shocking conspiracy that has been laid out long ago.