Core Viewpoint - The article discusses the significant drop in the virtual skin trading market for the game CS2, which lost approximately $2 billion (around 142 billion RMB) in a single day due to a new policy by the game's developer, Valve Corporation (V社) [5][28]. Group 1: Market Impact - On October 24, the CS2 skin trading market experienced a dramatic decline, with assets evaporating in just a few hours [5][7]. - Valve's new policy allowed lower-tier skins to be combined into higher-tier skins, drastically reducing the value of previously rare items [10][12]. - The price of popular items, such as the butterfly knife, saw a significant drop, with some players reporting losses of up to 600,000 RMB [14][16]. Group 2: Player Reactions - Many players expressed their frustration on social media, blaming Valve's CEO for the sudden market crash [18][21]. - Professional players and skin traders faced substantial financial losses, while some players viewed the policy change as beneficial for regular gamers [24][28]. Group 3: Economic System Design - Valve's economic system for CS skins has evolved over the years, starting from the introduction of cosmetic items in Team Fortress 2 to a complex trading platform in CS:GO [30][35]. - The market for CS skins became a significant financial derivative platform, with a peak market value exceeding $6 billion (approximately 43 billion RMB) [38]. - The lack of regulation and the speculative nature of the market have led to repeated cycles of boom and bust, similar to traditional financial markets [50][51].