Chinese stocks had the largest single-day drop in 10 years today, with the Shanghai Composite Index plunging 330.34 points or 8.26 percent to 3,670.40. Starting lower from 3,981.82, the index failed to bounce back to the 4,000-point foothold, with 3,987.27 as the highest right after the opening. But soon it slipped all the way down to the lowest 3,659.09 with little resistance. The few, weak turning-backs did not stop the sliding. The Shenzhen Component Index, tracking the smaller Shenzhen Stock Exchange, closed at 11,468.46, down 964.23 points or 7.76 percent. It went through the day within a rang between 11,464.23...