WANG GUILIAN,JINING. THE IMPORTANT POSITION AND EFFECTS OF PIANGUAN IN THE DEFENSE SYSTEM OF THE MING GREAT WALL. Ethiopian International Journal of Multidisciplinary Research, [S. l.], v. 11, n. 02, p. 53–57, 2024. Disponível em: https://www.eijmr.org/index.php/eijmr/article/view/1042. Acesso em: 14 dec. 2025.