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At Northwestern Polytechnical University in Shaanxi province, more than 600 students have volunteered to give private lessons to children and also help them deal with psychological issues they may have without their mothers or fathers being around.

At East Chapel Hill High School in North Carolina, students were holding a session discussing gun violence in addition to joining students around the country in a walkout.

At least 3,000 people were used as human guinea pigs by Unit 731, and more than 300,000 people across China were killed by Japan's biological weapons, according to the Museum of Evidence of War Crimes by Japanese Army Unit 731 in Harbin.

Assistant Commerce Minister Ren Hongbin said that this year's forum, which will be held on Nov 5, will try to address the challenges facing world economic development by focusing on opening-up and innovation.

At last month's Guangzhou auto show, BJEV Deputy General Manager Zhang Yong said the company will invest some 10 billion yuan (.5 billion) on research and development in the next three to five years and launch two to three new models every year.