开盘半小时 沪深京三市成交额达8230亿元

Group 1 - The core point of the article indicates that the trading volume in the Shanghai, Shenzhen, and Beijing markets reached 823 billion yuan within the first half hour of trading, which is a decrease of 36.2 billion yuan compared to the same time the previous day [1] - The estimated total trading amount for the day is approximately 2.7 trillion yuan [1]