Basic metals undergo a collective correction, with copper leading the decline. After reaching a historic high, the market has begun to reassess the global demand outlook, especially concerns about the economic growth rate of China, the largest consumer. As an economic indicator, copper's trend often reflects investors' true views on global growth. The current selling pressure indicates that market participants are digesting a reality: even if there are constraints on the supply side, the uncertainty on the demand side may be more decisive. This round of adjustment is not limited to copper; other basic metals are also declining simultaneously, further confirming market concerns about demand destruction. For traders关注宏观经济周期的交易者来说，这个信号值得留意。