My interests lie in mostly the research papers around military applications, and that's where China puts out stacks and stacks of papers that are worth shit.
For example, this:
https://www.scmp.com/news/china/sci...-develop-anti-stealth-radar-so-small-it-could
Then you read the paper and it's just a load of shit -> Radar power is directly proportional to the amount of surface area, curvature, and most importantly, power, you can get to a system. Reading through their actual published paper, they talk about metric wave radars...which have been around for decades, but are so low band that they cannot be used to provide any weapons tracking solution. It doesn't even mention how it solves the power and surface area curvature issue. Basically, if they've actually managed to achieve this, we have to entirely re-look at how we look at the electromagnetic spectrum because it's so ground breaking. They made this bold claim, it got "peer reviewed" domestically and then...nothing...silence. And just like that, it disappeared.
Only for it to be replaced by another guy making the exact same thing 2 years later with the exact same claim but with an entirely different solution.
https://interestingengineering.com/military/china-radar-stealth-f-22
https://ieeexplore.ieee.org/document/10416995
Again, peer reviewed domestically. Only...he basically just suggested placing low band with high band and S band, with alternating frequency radars all data-linked to one another, just using latest technology and materials to make it more efficient. This is in an entirely static ground based setup.
Great, this has been around since the 1980's, and all Aegis networks on US ships have had this setup of multi-band arrays data-linked to one another since the mid 1990's. Only, the research was, "Lets use modern materials and power generation to make it even more effective!"
Here's another example.
https://www.scmp.com/news/china/sci...-powerful-detonation-engine-hypersonic-flight
Reading the paper, again, peer reviewed domestically, it talks about how they've devised a mechanism to make the payload injection upon detonation super efficient on Scramjet powered engines. Then the paper talks about how it can feed air into its stableization properties to provide stabilization on the flight path. All sounds amazing...right?
Okay, but it completely neglects to mention how to handle the heat disappation problem. Post mach-6, which is what scramjets are built for, temperatures can reach and exceed 3000c. How on earth do you expect a fighter plane to be able to withstand that level of heat, especially since at that speed, air is no longer a viable coolant as it's being consumed by the engine itself for more speed. The drag co-efficient is so high, hypersonic planes are about 30-40 years away. It works for missiles because a missile has limited need for functional electronics and sensors, nor does it has a person inside.
Brilliant, you've written a paper that analogously shows how a guy can jump off a space station and land at a specific target, but you've neglected to mention how someone is supposed to survive the impact.
These two examples are just one of many of the ridiculous claims China has made, and peer reviewed, in this sector of its academia.
Maybe, it's only the military research papers that are like this, and everything else is pretty legit. But given the published retraction rates across the board of its research papers, I'm inclined to believe otherwise.