Prompt: To create a post-war world where people do not have a stable place to live. The buildings on the ground were damaged by the shells, and only seawater, ruins, and a small number of plants were left on the ground, so people left the ground and turned to live underground, collectively living in underground shelter spaces, and began to build cities underground, and the underground world was bright, with cement buildings, steel structures, glass curtain buildings, green spaces, clean water sources, etc., like the scene of the movie \"Inception\", to build a fully developed city

Negative: old,cars,shabby,Underdeveloped cities