On August 1 day, the 20021National Summer Social Practice for College Students was launched with the theme of "Carrying forward Nie Er's spirit and striving to be a new person of the times". 65 teams from 42 universities across the country went into Yuxi to carry out research and practice, give full play to the advantages of human resources and scientific research, and inject youthful strength into the construction of "one pole and two districts".