********** (fantasies, stories, pics, methods, etc.)

[Tomato]

An option is to download individual segments (about 10 seconds each) and join them together

First and last segments are:
https://b4.szjal.cn/20200806/qDg4nfe...DGgp2756000.ts
https://b4.szjal.cn/20200806/qDg4nfe...DGgp2756683.ts

Or jou can give Tubedigger a try

You can download the parts using this bash command:

for i in {0..683}; do wget $(printf 'https://b4.szjal.cn/20200806/qDg4nfel/1000kb/hls/PDGgp2756%03d.ts' "$i"); done

and then join them with cat
worked fine for me.