First open your browser and open bilibili.com. Sign in. Then right click on the login page and select "Inspect" or press "F12" to open the developer toolbar.

 

1. Select the "Application" tab

 

2. Select "Cookies" in "Storage".

 

3, then find "SESSDATA"

 

4. Copy this value

 

After that, open the webpage "dlpanda.com/bl", paste the value of "SESSDATA" you just copied into it, and then you can get the address of the HD video.

 

Then you can use the download tool on this site to download the video to your device.