I am not sure how else to explain this one but it's a simple no effort slow city destruction video. In the beginning the tiny people set up some walls to keep the Giantess Cali out of the city and she could easily go around them but she casually walks through them, They also set up smaller things in the city like houses and smaller walls to stop her and she casually crushes all of it with no effort and she does this with the building as well.