SUN, C. The Long-Term Mechanism of Extracurricular Activities in Primary and Secondary Schools: Using the Four Festivals and One Party in Huai’an No.1 Mountain Middle School as a Case Study . Science Insights Education Frontiers, [S. l.], v. 11, n. 1, p. 1517–1521, 2022. DOI: 10.15354/sief.22.or011. Disponível em: https://bonoi.org/index.php/sief/article/view/685. Acesso em: 17 apr. 2026.