Press F 12 in the browser, and then you can see the network data of this page. There is a network tab at the top of this box, and then you can refresh it, and then you can see the transmitted data. After that, you can look at the Xuankang brand on the second line. Size indicates the size of the data. You know the video is very big, tens of MB, and then you can click on the link of this thing and copy and download it in Thunder. Sometimes videos are segmented and have to be downloaded several times.