Shenzhen Water Bay Jie Wo Rui collapsed and turned over. I looked at the popular posts on Xiaohongshu, with hundreds of people posting tens of thousands of posts, but I didn't understand what exactly happened. Asked Grok, solved in three seconds. After thinking about it, the fundamental reason is that Xiaohongshu's posts are more like casual chats, with low information density from one mouth to another. Grok is a one-way report with very high information density. Another point of reflection is that Web2's retail investors are really easy to exploit. How can there be a continuous stream of people rushing into obvious scams?