The Closed Loop at the Ten-Year Lakeside

After the 2025 national college entrance examination, our homeroom teacher Teacher Yang held a Turtle Soup game for our class. [The game prompt is (On June 23, 10 years ago, a female student from our school fell into the lake and died. One person witnessed the entire process of her drowning, and she is forever trapped on this day. You need to describe everything the witness saw and restore the whole process of the incident). You only have 4 chances to ask questions, if you fail to complete the game before tonight, everyone will die.] I was sweating profusely, because I am that witness. The class publicity committee sorted out old materials and recalled that ten years ago, before the 100-Day Oath Ceremony, the principal modified one sentence in his speech: "Every time one black sheep is cleared out, there is one more opportunity for those who succeed", and also fully canceled the female restroom duty system in April that year. In the end, several people in the class died, and I returned to that lakeside from 10 years ago.