11:15, mutation! Can class A share history repeat itself?

On August 27th, the morning approached the close, and class A share mutated. From 11:15, the CSI 1000ETF collectively increased in volume. Before, a similar period of time, it was often the CSI 300ETF that increased in volume. What is the signal of this change? Looking back at the beginning of this year, influenced by the market style, CSI 300 and other weighted ETFs were actively traded, and many "popularity base" transactions exceeded 10 billion yuan in a single day. On February 5th, this style preference suddenly changed, and the CSI 500ETF, CSI 1000ETF, and growth enterprises market ETFs increased in volume. The Shanghai Composite Index rebounded after bottoming out on February 5th.