U.S. stocks surge at open

U.S. stocks opened sharply higher on Tuesday, as Wall Street tried to rebound after a long weekend.

Shortly after the opening bell, the Dow Jones Industrial Average gained 243.39 points, or 1.51 percent, to 16,345.77. The S&P 500 soared 31.25 points, or 1.63 percent, to 1,952.47. The Nasdaq Composite Index spiked 85.75 points, or 1.83 percent, to 4,769.67.

U.S. traders were cheered by gains in China's stocks market Tuesday. Chinese shares rebounded after encouraging news about an index circuit breaker system and a dividend tax break.

The benchmark Shanghai Composite Index surged more than 3 percent in the afternoon trading session, ending at 3,170.45 points, up 2.92 percent.

U.S. markets were closed on Monday for the Labor Day holiday.

Investors remain focused on the Federal Reserve ahead of its key policy meeting next week, when the central bank could raise interest rates for the first time in more than nine years.

U.S. stocks suffered big losses Friday as investors tried to digest the closely-watched jobs data amid global sell-offs.

U.S. nonfarm payrolls data came out mixed on Friday, and many analysts said such report gives policymakers enough support for the move of rate hike.

The Labor Department reported Friday that total nonfarm payroll employment added 173,000 in August, well below market consensus of 223,000.

The unemployment rate, however, inched down to 5.1 percent, beating market estimates of 5.2 percent and logging the lowest level in seven years. Endi