period 24

{"id":1834,"type":"document","url":"https://trungtamanhngucelals.easyedu.vn/sites/default/files/easyschool/upload/2023/10/7.10._red.xlsx","width":null,"height":null,"thumbnail":"https://trungtamanhngucelals.easyedu.vn/sites/all/themes/easyedu/images/excel-large.png"}