The Shenzhen Component Index closed 0.96 percent lower at 13,023.43 points.
The Super Tuesday Democratic primary decided over 1,300 pledged delegates to the DNC or roughly a third of the total. Typically, a candidate is only eligible to receive a share of the pledged delegates at stake if they win at least 15 percent of votes cast in a primary or caucus.
The Trump administration went a long way to prepare for the meeting, which came within the first 100 days of the new US presidency and was labeled by the New York Times as "the most important diplomatic encounter of his presidency so far."
The State Administration for Market Regulation said it will intensify antimonopoly law enforcement and maintain a fair environment for competition to protect the rights of businesses and patients.
The Taliban group has claimed responsibility for the attack.
The Shanghai-listed company's market capitalization now stands at more than 1.4 trillion yuan. In June, it became the first stock to see its share price exceed 1,000 yuan per share after 27 years. It became the most expensive stock in the A-share market, boosted by continuously growing demand and good earnings.
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The St. Mary's County sheriff's office confirmed an incident at the school and urged parents in a Twitter post not to approach the school. Federal investigators from the Bureau of Alcohol, Tobacco, Firearms and Explosives were heading to the school, the agency said.
The Trump-Kim meeting could be another step forward for the denuclearization of the Korean Peninsula following a summit on Friday between Kim and the ROK President Moon Jae-in.
The State Flood Control and Drought Relief Headquarters has dispatched work teams to guide local relief work, the ministry said.
The Spring Festival, or Chinese Lunar New Year, falls on Feb 16 this year. The festival is the most important occasion for family reunions.