What was the name of the 2015 Chinese stock-market crash centered on the Shanghai and Shenzhen exchanges?

The episode centered on China’s Shanghai and Shenzhen exchanges is called the 2015–2016 Chinese stock-market turbulence.

Chinese share prices rose rapidly during the first half of 2015, helped by retail investor participation, margin financing and expectations of continued economic growth. The Shanghai Composite Index reached 5,178.19 on June 12, 2015, before falling sharply over the following weeks.

The authorities responded with measures including restrictions on some share sales, support for purchases by state-linked institutions, investigations of market activity and changes affecting initial public offerings. Trading halts and efforts to stabilize prices became prominent parts of the response.

The event is sometimes described simply as China’s 2015 stock-market crash, but the relevant Wikipedia article uses the broader 2015–2016 title because volatility and official interventions continued beyond the initial summer decline. It was a stock-market shock, not the same event as China’s later property-sector stresses.