Reconstruction. It is necessary to retake the safety education examination for college students in Shanghai. Because the safety education platform is mandatory, teachers will have an assessment, so those who have to do it and fail the examination will retake the examination, but those who fail to do it will be punished. Shanghai, referred to as "Shanghai" or "Shen" for short, is a municipality directly under the Central Government of the People's Republic of China, a national central city of China, and an economic, financial, trade and shipping center of China. Located at the mouth of the Yangtze River, it faces Kyushu Island across the East China Sea, with Hangzhou Bay in the south and Jiangsu and Zhejiang provinces in the west.