I think $Direxion FTSE China Bull 3X(YINN.US) this kind of leveraged ETF is essentially a short-term amplified bet on the sentiment of China's large-cap stocks. The underlying is the FTSE China 50 index structure, with relatively high weights in technology and finance. If the market's positive expectations for easing China-US relations and improving trade data strengthen, it can surge sharply in the short term; conversely, it can plummet immediately when negative news hits. So if you're not an expert at watching the market, don't expect to hold it and wait for returns.