Rescue workers salvage the accident bus in Baodi section of North 皇冠体育app's Tianjin, on July 2, 2016. A bus carrying 30 people rushed out of an expressway Friday night in North 皇冠体育app's Tianjin City, and only four people were found alive as of 2 am Saturday, according to rescuers.[Photo/Xinhua]
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