昨天上證一度跌破 7%!?

At one point, the Shanghai Composite Index slumped as much as 7% before recovering slightly to finish with a Thursday decline of 4.5%.
Like the shakeout in global markets in [late February and early March] which was triggered by the 9% fall in the Shenzhen and Shanghai markets, some repricing of risk appeared overnight, said Matthew Strauss, senior currency strategist at RBC Capital Markets.