Chinese business sentiment towards exports dropped to its lowest since Nov. 2015 in October with a rating of 46.9 (below 50 indicates a contraction of exports is expected) from 48.0 a month earlier. That’s not a surprise given U.S. duties on Chinese exports now cover $250 billion of products and could widen in terms of coverage and rate in the new year. So far actual exports have continued to increase in both absolute and year-over-year terms, suggesting the turnaround could be swift when it comes. That said a weakening of the yuan, which was 4.4% weaker year over year in October vs. the...