A股三大指数走弱，创业板指跌逾3%

Market Performance - On November 21, the three major A-share indices weakened, with the ChiNext Index dropping over 3.00% [1] - The Shanghai Composite Index fell by 1.74%, and the Shenzhen Component Index decreased by 2.66% [1] - Nearly 5,000 stocks in the Shanghai, Shenzhen, and Beijing markets experienced declines [1] Sector Performance - The lithium battery supply chain, computing hardware, photovoltaic, and storage chip sectors saw the largest declines [1]