After the third global resource war in 2058, due to continuous nuclear war, the global climate model completely collapsed, the core grain-producing areas turned into saline-alkali sand, crops collapsed, and synthetic nutrients became the only option. And weight control was indeed about survival initially - with a population of less than two billion remaining, any additional caloric consumption could cause the rationing system to collapse. However, technology has advanced in the past thirty-five years, and control has become more stringent, and now it is more of a means of governance. In 2088, the "National Survival Security Act" was urgently launched. Traditional agriculture was determined to be a historically redundant, high-consumption and inefficient model, unsustainable, and was forcibly abolished! All biological resources were collected into the unified distribution center (the predecessor of the Weight Management Bureau). Core purpose: Exchange absolute resource allocation efficiency for the maximum population survival base! The energy consumption and contribution weight of individual citizens need to be quantified and monitored - the weight monitoring system was born, and the unified deployment center was renamed the Weight Management Bureau...