Natural Disaster Mechanic, I Changed the School Girl into a Machine Girl

[Urban high martial arts + mechanical ascension + decisive killing + multi-machine girl + relaxing fun + so cool that you can fly] "Slander! Pure slander!" "Those big chaebols in the uptown area are always spreading rumors, saying that I have led all the good geniuses of mankind to bad things." In the 103rd year of the New Era, faced with the long-term and short-term tactics of the major media in the huge city. Xia Yuan, who had just become the underground emperor of Shangxiacheng District, was filled with righteous indignation: "The eldest lady of the Chu family was abandoned and her body was thrown away. I saved it out of humanitarianism!" "The meridians of the swordsman saint of the Ye family are all broken. I just can't stand it, so I put some iron sheets on her!" "As for the federal princess who was deprived of her divine blood, she became a machine girl purely of her own free will!" "I can swear that from beginning to end, I, Xia Yuan, am just an ordinary maintenance worker who picks up rags in the garbage dump." … In the winter of the 105th year of the New Era, the high walls of the upper city collapsed under the revenge fire of the machine girls. The legions came to the city, and the plutocrats trembled. [Reading Comprehension (10 points): Please combine the above materials to briefly describe the reasons for the demise of the Shangcheng District chaebol, and demonstrate why "Natural Disaster·Xia Yuan" is the sole commander-in-chief this time? ——Selected from "Federal Higher Extraordinary High School·Must-Crush History Papers for Admission to Higher Education"