The trading volume of many broad-based ETFs increased significantly. The trading volume of Huatai-PineBridge CSI 300 ETF exceeded 4.2 billion yuan, and the trading volume for the whole day on the previous day was 2.5 billion yuan; the trading volume of Hua Xia SSE 50 ETF exceeded 2.8 billion yuan, and the trading volume for the whole day on the previous day was 1.5 billion yuan.