A-share indices rallied with intraday volatility. Shanghai Composite closed
+0.50%, Shenzhen Composite Index +2.48%, ChiNext Index +2.99%; turnover in
Shanghai and Shenzhen exceeded 3.2 trillion yuan and more than 2,900 stocks
advanced. Sector rotation was rapid: optical/optoelectronics led gains all day
and several stocks hit daily limits. The chip chain strengthened in the
afternoon, led by optical chips and analog chips; robotics also picked up.
Top-performing sectors included semiconductors, glass substrates, commercial
aerospace and internet; laggards were petrochemicals, chemical fiber,
construction machinery and coal.