https://itsfoss.com/add-apt-repository-command-not-found/

https://translate.googleusercontent.com/translate_c?depth=1&hl=en&rurl=translate.google.com&sl=auto&sp=nmt4&tl=en&u=https://www.ithome.com/0/477/939.htm&usg=ALkJrhjK-Oa7rwd89RZ7BXtIAhA0zH2Vqg

https://www.ithome.com/0/477/939.htm

https://translate.google.com/translate?hl=en&sl=auto&tl=en&u=http%3A%2F%2Fscitech.people.com.cn%2Fn1%2F2020%2F0316%2Fc1007-31633664.html

http://scitech.people.com.cn/n1/2020/0316/c1007-31633664.html

https://www.abacusnews.com/tech/meet-chinese-operating-system-thats-trying-shift-country-windows/article/3075616

https://linux.slashdot.org/story/20/02/02/2242201/ubuntu-vs-windows-10-performance-tests-on-a-walmart-laptop

https://cntechpost.com/2019/12/31/union-tech-acquires-deepin-a-well-known-linux-based-os-maker-in-china

https://www.ft.com/content/b55fc6ee-1787-11ea-8d73-6303645ac406

https://news.cgtn.com/news/2019-12-29/Another-Chinese-computer-operating-system-Will-the-UOS-succeed–MOvNuOJnK8/index.html

https://www.zdnet.com/article/two-of-chinas-largest-tech-firms-are-uniting-to-create-a-new-domestic-os/

Heres the full tutorial that goes with the video: https://null-byte.wonderhowto.com/how-to/spy-traffic-from-smartphone-with-wireshark-0198549/