Beijing says it will crack down hard on suspicious trading, vowing tough enforcement would become a “new norm” as it tries to rein in the excesses that have shaken the A-share market, as market manipulators chasing profits had exploited new technologies, investment products and business models. “Tightened regulation will become a new norm,” an official said. The CSRC also said it would strengthen supervision of the grey financing market, which channeled an estimated CNY2 trillion in unregulated funds to investors who bought on margin.