China's new carrier rocket debuts at Farnborough Air Show

[Carnivore]

By "debut", do you mean that the actual prototype was built and presented, or is it simply another "exhibitions" where they show the model?

Just models. China designs two new engines for CZ-5. It seems the development of YF77 LO/LH engine is behind schedule. Maybe they will only use the YF100 LO/Kero engine in its maiden flight.