I think this is not a "expert" view of technology evaluation. They maybe partially technically generic, but the fighter is not an aviation model. You will know there are 400+ J-10 already in operation, about IVA not serve in any Air Force
Type-051B DDG-167"Shenzhen" escort mission in Somalia 2009 -2012?
It is known DDG-167 was upgraded complete in 2015.
https://en.wikipedia.org/wiki/Type_051B_destroyer