SHI, Hanling. Chongzhou city middle school students to participate in extracurricular sports activities Research on internal causes, current situation and countermeasures. Frontiers in Humanities and Social Sciences, [S. l.], v. 6, n. 3, p. 165–175, 2026. DOI: 10.54691/0kx9z186. Disponível em: https://fhssjournal.org/index.php/ojs/article/view/562. Acesso em: 14 may. 2026.