Summary: China’s C919 aircraft constructed by COMAC follows Western safety guidelines and even uses a lot of Western parts, but the European agency responsible for certification has delayed it by 3-6 years. This isn’t a major problem for the C919, though, since China’s domestic aircraft demand is large and increasing, and since other nations can set up their own aircraft certification processes instead of relying on the Europeans.

I found a YouTube link in your post. Here are links to the same video on alternative frontends that protect your privacy:

• yewtu.be
• inv.nadeko.net
• yt.artemislena.eu
• piped.video