Chinese shares close lower at midday
Shanghai Composite Index down 0.12 percent to finish at 2,648.53 points.
China treasury bond futures open higher Tuesday
China's five-year treasury bond futures opened higher on Tuesday.
Hong Kong stocks open 0.32 pct lower
Hong Kong stocks lost 86.52 points, or 0.32 percent, to open at 26,846.33 points on Tuesday.
Gold futures rise as greenback goes weak, U.S. equities slump
Gold futures on the COMEX division of the New York Mercantile Exchange rose slightly on Monday.