军工、光交换机、AI应用大涨，A股成交额萎缩，高手怎么看？

Group 1 - The core viewpoint of the news highlights the ongoing "掘金大赛" (Gold Digging Competition) hosted by the Daily Economic News App, which is a simulated stock trading competition with a total simulated capital of 500,000 yuan, running from November 17 to November 28 [1][3]. - The competition offers various cash rewards for participants, including 688 yuan for the first place, and additional rewards for subsequent ranks, with a total of 500 yuan to be shared among other profitable participants [3][5]. - Participants can gain access to a dedicated group for sharing market insights and investment strategies after registering for the competition, enhancing their trading experience [5][6]. Group 2 - Market sentiment appears cautious, with experts noting that the Shanghai Composite Index broke key support levels on November 21, indicating a technical rebound on the following Monday, but with significantly reduced trading volume [4]. - The current market environment is characterized by increased difficulty in generating profits, prompting experts to advise participants to manage their positions carefully and maintain a watchful stance [5]. - The "火线快评" (Quick Review) product, developed by a team led by 达哥, provides insights into market trends and investment logic, having highlighted successful sectors such as the Nvidia supply chain and rare earths, with some stocks experiencing price increases of up to 200% [5].