<p>Bài 15</p>
File Urls
{"id":168,"type":"video","url":"https://gct.easyedu.vn/sites/default/files/easyschool/upload/2026/08/bai_15.mp4","width":2160,"height":1080,"thumbnail":"https://gct.easyedu.vn/sites/default/files/easyschool/upload/2026/08/c975977e-6d29-4ded-8512-ff0ebf6563d6.png"}
Lecture Type
Bài học