What is the usual name for the dramatic Chinese share-price collapse that began in June 2015?

The dramatic Chinese share-price collapse that began in June 2015 is usually called the 2015 Chinese stock market crash.

Chinese mainland equities had risen rapidly in the first half of 2015, supported by heavy retail participation, margin borrowing, and expectations of continued economic growth. The Shanghai Composite reached a high of 5,178.19 on June 12, 2015.

Prices then fell sharply. By August, the decline had become a major international story, and global markets experienced additional volatility during the so-called Black Monday of August 24, 2015. Chinese authorities introduced measures intended to stabilize trading and reduce panic.

The episode is also called the 2015–2016 Chinese stock market turbulence because market stress continued beyond the initial summer collapse. It should not be confused with China’s 2007–2008 market decline or later property-market problems.