午后大回踩，有什么内幕?

Group 1 - The article discusses a significant market pullback that occurred in the afternoon without any apparent negative news, indicating potential underlying issues [3][4] - The pullback in the Chinese market was mirrored by a larger decline in the Hong Kong market, and global markets, including Europe and the US, also experienced downturns [3] - The timing of the market movement coincided with the upcoming US-China trade negotiations, suggesting that comments from President Trump about the difficulty of the negotiations may have influenced market sentiment [3][4] Group 2 - The article suggests that despite the pullback, the negotiations between the US and China are serious and both sides are aware of each other's positions, indicating a pragmatic approach [4] - The US is under significant internal and external pressure, necessitating positive news to alleviate market stress, particularly concerning US debt and domestic stability [4]