Three major A-share indices turn down across the board, Shanghai Composite loses 3900 points again; computing power hardware explodes, CPO surges, oil & gas and coal sectors adjust collectively

Computing power hardware stocks exploded, with sectors like CPO and optical communications surging across the board. TACLINK hit a 20CM limit-up, while Everbright and AFR rose over 10%. The computing power leasing concept saw localized activity, led by the computing power scheduling direction, where SI-TECH and ZZNode hit limit-up, and BONCloud, sinnet, BESTER, and UCloud followed. The fiber optic concept remained strong. Huiyuan Communication hit limit-up at the opening bell, recording a second consecutive limit-up board; HTGD rose over 9%, and YOFC once rose over 6% to hit a new historical high, with OPTOWIDE, Everbright, and Accelink following the gains