Should be the "same" engine. ZQ-2's first and second stages use the "same" engine, 4 vs 1. While the first stage engines are sea level optimized for take-off at 67t, the second stage is 80t in vacuum. It could be that Landspace choose to label them with different numbers instead of same number with different letter suffix.The engine is labelled TQ-13. Is it a different engine from TQ-12?
The twitter post is showing a 8t thrust engine's operation process. I know existence of two versions of this engine for manned moon landing since 2015 at the latest.Existence of the Office of Crewed Lunar Program confirmed
I think it's a PMO level office under CNSA Lunar Exploration and Aerospace Engineering Center(中国国家航天局探月与航天工程中心). It may be just a technical department of CLEP so most of the news were released by CNSA or CLEP(China Lunar Exploration Project) office.The twitter post is showing a 8t thrust engine's operation process. I know existence of two versions of this engine for manned moon landing since 2015 at the latest.
However the post does not state office of crewed lunar program. Whether there is or there will be such new office, the manned lunar program has started long ago. My experience is that a clear cut statement such as new office isn't important judge what China is doing or going to do. This is a big difference with US.
Building another one of this will simply reflect and based on the necessity to meet the objective set. I mean, why would they make more of this than what's required? Which wouldn't make financial or economic sense.
I wonder how many more ships of this kind China will built, I don't think one is going to be enough to meet the increasing demands of its space program.