On April 30th, AVIC Guizhou Institute listed a project on the official Chinese military procurement portal. It's an R&D item for stealth coating, presumably for engine nozzles. It calls for eight examples to be constructed by Dececmber, 2022. Sharing this here because it might have something to do with the new carrier fighter project.
Of course, AVIC Guizhou Institute is responsible for medium and low-thrust turbofan development. The image below is a publicity blurb about the institute. The underlined text says the institute is responsible for the engines for China's shipborne/carrier fighter. Again, nothing we don't already know or suspect.