I won’t be able to watch it. Have fun watching it. Are you of Chinese ancestry?
And why are not able to watch it? You dont have access to YouTube!?!?
In some areas China is, yes the US and China do have different military purposes but they do also have the same. The US leads China in stealth bombers and nuclear powered military vessels
To have any kind of meaningful discussion on technology, you need to do so at a far more granular level than "stealth bomber technology," and/or "nuclear submarine technology and nuclear carrier technology." In the real world, technology is a lot more complicated than it may be depicted in a game of Civilization, where you click on a button to start researching, "Stealth bomber." To produce a stealth bomber, you would need mastery in dozens of actual technologies ie: turbofan technology, materials science, RAM technology, IWB technology, composites production technology, advanced metallurgy technology, super computer technology, electronic sensor technology, precision manufacturing technology, etc.
Also, how are measuring the gap in technology? Is the measure relative to Chinese pace of development, or US pace? Are you just looking at actual dates of introduction? Ie - F-22 entered service in 2005, J-20 entered service in 2017, therefore US is 12 years ahead in stealth fighter tech? In most cases, having developed a system first does necessarily imply you are still ahead in technology. For example, only recently did China master large marine gas turbines, while the US has mastered the technology decades ago. However, the most modern US marine gas turbines are no more advanced than the most modern Chinese ones. China was the first to fly 6th generation fighter airframes despite being 12 years behind in "stealth fighter technology".