Question about assembling my own DIY AC Cable

Hi
I am about to assemble my first DIY AC Power cables for the first time. I chose the Yarbo SP-1100W as cable  and Viborg connectors.
Connectors:
http://www.viborgaudio.com/en/Product/a/chanpin/jianzhusheji/2019/1231/305.html

Cable:

I was looking through some guides on youtube how to assemble it and I found this video from Furutech and as you can see they separate each conductor in 2 branches. I don't understand why they are doing that, does anybody know why? Should I do that as well for my power cable?

Cheers