Since the yuan devaluation in 2015, the Chinese stock market has slumped. Many believe the slump reflects a slump in the Chinese economy; and given the Chinese opacity, have nothing to contradict the possibility. So, the Chinese market falls, falls again, and then investors are spooked when the market triggers are enacted that halt trading at 5% and 7% drops. China just had its shortest trading day, 15 minutes. Maybe it is all just the learning process for an innovative blend of capitalism and communism; but it may be the start of a bubble bursting that is already rippling out through commodities, finance, and personal finance.
(Click on the graph for the link.)