Just finished listening and heard interesting news about materials from 23:00. It was said that Japanese basic materials were of good quality and that Toray Japan made the materials that were supplied to Ishikawajima Harima Heavy Industries to produce the f110 engine. As far as I remember Japanese engine making is superior to that of China. If ranked US first, Japan second, Russia third and China fourth?
My knowledge of the military is very fragmented. It's a noob
Chinese and Japanese aviation industries can not be compared directly. Japan does manufacture some really good components but it has few complete systems it is offering. You can see it across the board. They manufacture really good parts for many recent Airbus and Boeing aircraft yet they don't have a C-919 equivalent. It is the same for jet engines too.
The US is the clear leader when it comes to jet engines. If it was 2000 or before I would say the UK was an equivalent of the US but the US pulled ahead of them in recent decades. France is really competitive in civilian engines (CFM is 50% French) but it nowadays doesn't do many independent projects and the Snecma M88 fighter engine is nothing special in 2023. They have very few projects in the pipeline so China will fastly catch-up and surpass them. The WS-15 is better than any military engine they ever came up with and the CJ-1000 will be better than anything France developed on its own.
Russia was in a perpetual catch-up since right after WW2. They fell quite behind especially after 1991. I would say China has surpassed Russia in fighter engines considering the current situation of the Izdeliye 30 project. The new PD-14 high-bypass engine series is no joke though.