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This post questions the profitability of SpaceX's Mars colonization, arguing that only satellite communications is profitable and that the Mars project is a money-burning dream, concluding that humans cannot become a multi-planetary species.
User asks Teacher Lidang to analyze why Pinduoduo's market value and business development have far exceeded those of other e-commerce platforms like Youzan, Yunji, and Weidian that started around the same time.