Which 2015 Chinese market crash led regulators to suspend trading after the CSI 300 fell 7%?

The 2015 Chinese market crash was the episode that led regulators to suspend trading after the CSI 300 fell 7%.

China’s stock market rose rapidly in the first half of 2015, driven partly by retail-investor borrowing and optimism about economic growth. The Shanghai Composite reached a high of 5,178.19 on 12 June 2015 before falling heavily over the following months.

Authorities responded with measures including restrictions on some selling, support for shares, and changes to trading mechanisms. A circuit-breaker system introduced in January 2016 halted trading after large moves, but it was suspended after producing further disruption.

This episode is distinct from the January 2016 event alone. The wider 2015–2016 turbulence began with the 2015 bubble’s collapse and continued through the later circuit-breaker controversy.