Core Viewpoint - The article highlights the recent surge in the Shanghai Composite Index, which surpassed 3,800 points for the first time since August 2015, indicating a strong market sentiment and prompting various investor reactions [1][4]. Group 1: Market Sentiment - The Shanghai Composite Index's breakthrough of 3,800 points has created a heated market atmosphere, leading to diverse investor strategies ranging from aggressive buying to cautious observation [1]. - The article invites investors to participate in a survey to gauge their sentiments and strategies, emphasizing the importance of understanding market trends and investor behavior [1][4]. Group 2: Investor Engagement - The "Investor Sentiment Briefing" aims to collect insights from over 100 investor education communities, focusing on four core dimensions: short-term expectations, behavioral signals, risk preferences, and profit-loss pressure [4]. - The survey is positioned as a tool for both novice and experienced investors to clarify their investment thoughts and understand the collective choices of the investment community [4].