Inherit the red gene and keep in mind the original mission. In June 1, the teachers and students of University of Shanghai for Science and Technology went to Chen Yun Memorial Hall, Yangtze River Delta Ecological Green Integration Development Demonstration Zone and Minimally Invasive Medical Devices (Shanghai) Co., Ltd. to study the "Four History". The purpose of red tour, blue tour and green tour is to further inherit red through the "three-color tour" of red tour, green tour and blue tour.