China stocks just had their best day in 16 years, sending related U.S. ETFs soaring CNBCChina stocks surge in biggest single-day rally since 2008 on stimulus cheer ReutersChina’s Small Businesses Wait for Stimulus Help. They’re Wary. Barron’sChina Markets Surge in Wild End to the Quarter The Wall Street JournalHedging Goes Out the Door With Burst of China Stocks Euphoria Bloomberg