Successful test of some sort of air breathing kerosene fuelled spaceplane engine prototype from Tsinghua University.
Seems to be an air augmented rocket of some sort with an inlet cone, boosted by a solid fuel first stage. However it also said test successfully gathered data on how vacuum environment affects the engine's various performance parameters. So maybe it's got both air breathing and rocket mode.
I think you misread the article. The article repeated words 真实 (real life), not 真空 (vacuum). I agree, it is just a scramjet.Here's a better video of the test, maybe it's "just" a scramjet. The vacuum operation part throws me off. The test of the engine happened at 30km up, the vehicle was recovered by parachute.
If my understanding is right (see post 10066 above), it is an air breathing engine that covers speed range from turbojet to hypersonic/scramjet, not a rocket engine.
But detonation engine is the company's main work, also if it was not a detonation engine the report shouldn't have mentioned Self PGC.It looks just like a scramjet to me. I think if it was a pulse detonation engine you wouldn't need a rocket booster to get it up to speed.