Under the control of the epidemic, in Minhang campus of Shanghai Jiaotong University, more than 300 faculty members, including academicians, professors, associate professors and engineers, turned into "takeout brothers" in their spare time to deliver three meals a day to nearly 30000 students in about 100 dormitories. This "takeout day group" strives to make the dishes "faster, hotter and more fragrant". They also applied science and engineering literacy, used "modeling" analysis to study the optimal placement of car trunk and meal delivery route, and shared the model with the volunteer group; The "algorithm" is used to allocate manpower and lunch boxes efficiently and accurately match the amount required by the dormitory; Private cars, tricycles, unmanned trailers and unmanned minibuses... Within three days, four "meal delivery artifacts" have been put into use on campus, and the number of boxed meals per vehicle has been upgraded from dozens to 1500. Although the campus is large, three meals a day are always hot. This gentle and hard core war epidemic is known as the most voluminous "takeout group" in history. Sending boxed lunch to academicians and scholars is not only the treatment that can be enjoyed by "other people's schools". Every university has its own good teachers and warmth. "Children, we will certainly serve the meal!" A simple word makes the students of Jilin University feel warm in the wind and snow. These special "catering staff" and "delivery staff" have aroused extensive discussion among netizens. "The backbone of scholars is bent for the younger generation", which has moved netizens. "Highly educated takeout group" is popular. What makes people break the defense? The teachers who walked against the wind silently contributed to the students and won the praise of the tide, making the students in the epidemic feel the warmest power. Teachers also have their own families and lives, and the epidemic will bring them many difficulties and inconvenience, but they can come at the critical moment and stand up. The sense of responsibility and dedication behind them are respected. Peaches and plums speak for themselves. Infecting students with noble sentiments and letting students bathe in sunshine is the highest realm of education. In extraordinary times, teachers practiced the concept of "everything for students" and demonstrated good teachers' ethics. At the same time, the war epidemic is also a silent teaching for students. In the chat box, the words "the teacher has worked hard" filled the screen; The teacher came to the downstairs of the dormitory with packed lunch boxes. Young faces appeared on the windows and shouted "1-2-3 - thank you, teacher!" Such a warm interaction is exciting. In addition to moving, we also saw the precise epidemic prevention with the help of science and technology. Strive to achieve the maximum prevention and control effect at the least cost and minimize the impact of the epidemic on economic and social development. The campus is the key place for epidemic prevention and control, and the "highly educated takeout group" has undoubtedly set an example. Science and technology to the good, boundless merit. As long as we use our feelings carefully, we can implement accurate prevention and control in different places according to local conditions and people, so that people can feel the temperature of the war epidemic all the time, and better unite to win the complete victory in the fight against the epidemic. There is no spring cold that will not pass, and there is no spring that will not come. In the big test of epidemic prevention, teachers and students wrote answers with love and youth and worked together to overcome difficulties. The plague haze will dissipate, and the spring flowers will still be gorgeous. (Xinhua News Agency)